The Best 20mm drill bits of 2022 – Reviews & Buying Guide
After hours researching and comparing all models on the market, we find out the Best 20mm drill bits of 2022. Check our ranking below.
2,117 Reviews Scanned
Rank No. #1
uxcell Reduced Shank Twist Drill Bits 20mm High Speed Steel 4341 with 10mm (3/8") Shank for Stainless Steel Alloy Metal Plastic Wood
- Features: Cutting Edge Diameter : 20mm / 0.79"; Shank Diameter : 10mm / 3/8"; Cutting Edge Length: 55mm / 2.17"; Total Length : 150mm / 6.0"; Cutting Direction: Right Hand
- High Speed Steel Tool: The twist drill bits are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. High cutting edge strength, fast cutting speed.
- Reduced Shank: Reduced shank drill expands the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. Sharp and spiral cutting edge provides neat and smooth cuts.
- Black & Gold Oxide Finish: Premium gold titanium and black nitride dual coating can apply lubricant better for smoother drilling and is more durable and corrosion resistant. Spiral groove facilitates the export of metal chip, saving time and effort in operation.
- Versatile Uses: For use in a wide range of stainless steel, aluminum alloy, iron, copper, brass, wood, plastic, and other metal materials. Suitable for hand drills, bench drills, etc. Tri-flat on the shank of drills are constructed for tighter chucking maximizing security for precise holes.
SaleRank No. #2
20mm Reduced Shank Drill Bit, 1/2” Shank High Speed Steel Twist Drill Bit HSS 9341 for Aluminum Plate Copper Wood Stainless Steel
- Size: Cutting Diameter: 20mm/0.78”; Shank: 1/2”; Total Length: 154mm(6.06”)
- Material: High speed steel 9341 is designed to ensure sharp and fast execution in metal surface for clean results.
- Nitriding surface treatment makes it durable and can withstand heavy duty operation for long service.
- Precision ground with geometry of 118 degree split point for quick penetration and accurate start-up.
- Suitable for drilling various materials such as die steel, l-beam, channel steel, ordinary steel, aluminum, copper, wood, stainless steel.
SaleRank No. #3
3Pcs HSS Titanium Coated Step Drill Bit Set, 1/4" Hex Shank Quick Change High Speed Steel Cone Drill Bit Kit for Plastic, Wood, Metal Sheet, Aluminum Hole Drilling (Metric 4-12mm/4-20mm/4-32mm)
- 【Widely Used】Perfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc.
- 【Material】HSS combined with a titanium coating. More capable and durable.
- 【Easy Drilling】Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake
- 【SET INCLUDES】Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm)
- 【Package Included】 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ). 1/4" Hex shaft drives are suitable for all kinds of for home DIY power drills.
Rank No. #4
uxcell Reduced Shank Drill Bit 20mm High Speed Steel HSS 9341 Black Oxide with 1/2 Inch Straight Shank
- High Speed Steel tool - 20mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance
- Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes
- Black Oxide Finish - Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge
- Wide Application - Design for drilling in low and medium tensile strength materials, such aluminum, iron, copper, brass and metal
- Please Note: To make clean and precise holes, water is required for lubrication and cooling when drilling metals. Increased use of water lubrication will extend drill bit life
Rank No. #5
JIECHENG Forstner Drill Bits 15mm,20mm,25mm,30mm,35mm 5 Pcs Set,with Carbide Tip Hinge for Wood and Plastic
- 5 Pcs forstner drill bit,include 15mm,20mm,25mm,30mm,35mm
- Material: TCT carbide tip,the shank is high carbon steel.
- Advantage:The blades are made of superhard thickened alloy which can be sharper and more durable · Curvature curve of the head with the body design is conducive to BTA ,perforation more efficient
- It is useful for wood working,and also plastic, plywood and other materials you need to exquisite perforation;
- Note:please take care when work,the tip is sharp,please take care of your eyes and hands.
Rank No. #6
uxcell Forstner Drill Bits 20mm, Tungsten Carbide Wood Hole Saw Auger Opener, Woodworking Hinge Hole Drilling Boring Bit Cutter (Blue, Gray)
- Forstner Drill Bit: Drilling diameter: 20mm / 0.79"; shank size: 7mm / 0.28"; drilling depth: 48mm / 1.89"; total length: 79mm / 3.11". Thickened carbide cutter and solid hardened steel body, round shank forstner bits for woodworking.
- Applications: Can be used for drilling holes on wood and plastic products, furniture, door hinge. Used on cutting wood, plywood, solid wood boards, MDF, plastics, fiberglass etc.. Forstner drill bit is for ordinary purpose
- Features: Tungsten carbide cutting tip with special heat treatment for sharp cutting edge, high hardness, non-burrs and durable use. Arc curve design head for easy chip-removal, more efficient perforation
- How To Use: Suitable for bench drill, vertical drilling machine, CNC carving machine. Processing hardwood or other hard materials should be injected with water to improve the quality and accuracy of drilling, and extend the life of the hole opener.
- Tips: Maximum speed: 2000rpm. Used on desktop (fixed) equipment, and can NOT be used on handheld power tools (such as hand drill or electric drill). Can not drill metal and non-ferrous metal. To avoid causing damage, be sure no nails or other metal objects in wood before drilling. The cutting edge and tip of the opener should be sharpened in time.
Rank No. #7
uxcell Step Drill Bit HSS 4241 4mm to 20mm 9 Sizes Titanium Coated Straight Flutes Hex Shank for Metal Wood Plastic
- Shank Type: 6mm Hex Shank; Material: HSS 4241 with Titanium Coated; Drilling Diameters: 4mm/0.16", 6mm/0.24", 8mm/0.3", 10mm/0.4",12mm/0.47", 14mm/0.55", 16mm/0.6", 18mm/0.7", 20mm/0.8".
- This step drill bit is durable and strong enough to punch and drill clean holes in materials like metal, wood, etc.. It can also help to enlarge existing holes and clean edges.
- It is Great for drilling holes for iron, metal, aluminum, copper, wood, plastic, PVC board and many other types of sheets.
- Suitable for hand-held drilling rigs, drilling machines, milling machines and machining centers, for metal sheet, maintenance and modification, bridge doors and windows, home appliances, etc..
- Note: High temperature will affect the working life, please use coolant while drilling on metals to ensure the drill bit working properly. Please keep it properly preserved. Avoid falling the bits from high place.
Rank No. #8
uxcell Forstner Drill Bits 20mm, Tungsten Carbide Wood Hole Saw Auger Opener, Woodworking Hinge Hole Drilling Boring Bit Cutter, 2pcs (Blue, Gray)
- Specifications: Drilling dia.: 20mm; shank size: 7mm; drilling depth: 48mm; total length: 78mm. Round shank, cemented carbide cutter and solid hardened steel body.
- Applications: Can be used for drilling holes on wood and plastic products, furniture, door hinge. Used on cutting wood, plywood, solid wood boards, MDF, plastics, fiberglass etc.. Forstner drill bit is for ordinary purpose
- Features: Tungsten carbide cutting tip with special heat treatment for sharp cutting edge, high hardness, non-burrs and durable use. Arc curve design head for easy chip-removal, more efficient perforation
- How To Use: Suitable for bench drill, vertical drilling machine, CNC carving machine. Processing hardwood or other hard materials should be injected with water to improve the quality and accuracy of drilling, and extend the life of the hole opener.
- Tips: Maximum speed: 2000rpm. Used on desktop (fixed) equipment, and can NOT be used on handheld power tools (such as hand drill or electric drill). Can not drill metal and non-ferrous metal. To avoid causing damage, be sure no nails or other metal objects in wood before drilling. The cutting edge and tip of the opener should be sharpened in time.
Rank No. #9
Forstner Drill Bits 20mm (25/32 inch) Tungsten Carbide Upgraded Version Higher Hardness Wood Hole Saw Auger Opener Woodworking Drilling Tool Wood Cutter
- [SPECIAL DESIGN] Using these sharp drill bits, you can drill accurate, smooth, neat holes without burrs, even in end-grain and through knots. Arc curve design head contributes to removing sawdust faster, making your work more efficient.
- [MATERIAL] The cutting edge is made of K35 monolithic tungsten carbide, hardness ≥91HRA, bending strength >2200N/cm2, resharpenable for a longer service life. It has the advantages of high hardness, wear resistance, good toughness, heat resistance and corrosion resistance. The shank is made of steel 45#.
- [SPECIFICATIONS] Drilling dia.: 20mm; shank dia.: 8mm; drilling depth: 60mm; total length: 90mm.
- [APPLICATIONS] Suitable for cutting holes onto solid wood, softwood, hardwood, plywood, MDF, chipboard, and also plastic, rubber, fiberglass. Can be used in drill press, bench drill, vertical drilling machine, CNC carving machine, etc..
- [NOTE] 1. Sharp parts contained, please keep away from children and pets. 2. Can NOT be used for metal processing, or the drill bits will get damaged quickly. 3. Material must be fixed during cutting, and the drill bit should be perpendicular to the material. 4. Set slow drilling speed till the drill bit is completely located, then gradually accelerate speed. 5. Water should be injected when processing hardwood, in order to improve drilling accuracy and quality.
Rank No. #10
Forstner Drill Bits 20mm Tungsten Carbide Wood Hole Saw Auger Opener Woodworking Drilling Tool Wood Cutter
- [SPECIAL DESIGN] Using these sharp drill bits, you can drill accurate, smooth, neat holes without burrs, even in end-grain and through knots. Arc curve design head contributes to removing sawdust faster, making your work more efficient.
- [MATERIAL] The cutting edge is made of K30 monolithic tungsten carbide, hardness ≥90HRA, bending strength >1900N/cm2, resharpenable for a longer service life. It has the advantages of high hardness, wear resistance, good toughness, heat resistance and corrosion resistance. The shank is made of steel 45#.
- [SPECIFICATIONS] Drilling dia.: 20mm; shank dia.: 8mm; drilling depth: 54mm; total length: 88mm.
- [APPLICATIONS] Suitable for cutting holes onto solid wood, softwood, hardwood, plywood, MDF, chipboard, and also plastic, rubber, fiberglass. Can be used in drill press, bench drill, vertical drilling machine, CNC carving machine, etc..
- [NOTE] 1. Sharp parts contained, please keep away from children and pets. 2. Can NOT be used for metal processing, or the will drill bits get damaged quickly. 3. Material must be fixed during cutting, and the drill bit should be perpendicular to the material. 4. Set slow drilling speed till the drill bit is completely located, then gradually accelerate speed. 5. Water should be injected when processing hardwood, in order to improve drilling accuracy and quality.
Last update on 2022-11-03 / Affiliate links / Images from Amazon Product Advertising API
How Do You Buy The Best 20mm drill bits?
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- Brand Value: Every brand of 20mm drill bits has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
- Features: What bells and whistles matter for an 20mm drill bits?
- Specifications: How powerful they are can be measured.
- Product Value: This simply is how much bang for the buck you get from your 20mm drill bits.
- Customer Ratings: Number ratings grade 20mm drill bits objectively.
- Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 20mm drill bits.
- Product Quality: You don’t always get what you pay for with an 20mm drill bits, sometimes less, and sometimes more.
- Product Reliability: How sturdy and durable an 20mm drill bits is should be an indication of how long it will work out for you.
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