Top 10 Step Drill Bit Metric – Step Drill Bits

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1. Neiko

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NEIKO 10198A Step Drill Bit Set | 5 Piece | Metric/MM | High Speed Steel

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Neiko #ad - Quality: each unibit is made with high strength HSS and is black and cobalt-treated for added durability to ensure long service life and longevity. Complete: this metric drill bit set has five step drill bits with a two-flute design for faster, smoother cutting and tri-flat shank for a sure grip for higher efficiency of output.

Includes}: sizes: 6mm shank: 9 steps- 4, 8, 9 10, 8, 8, 10, 12 mm, 28, 14, 18 mm, 10, 12, 10, 8, 12 mm and 8mm shank 7 steps- 6, 25, 32, 16, 6, 16, 18, 14, 6, 10, 11, 22, 20, 6, 7, 13, 18, 5 steps- 4, 22mm and 10mm shank 13 steps- 6, 30, 5, 12, 16, 20, 8, 10 steps- 4, 35 mm.1135° split point tip: the design of the tip angle increases cutting speed with self-centering and prevents walking off the surface of workpiece. Design: the two-flute design clears chips faster and allows particles to escape easily making for cleaner holes at the worksite.
BrandNeiko #ad
ManufacturerRidgerock Tools Inc. #ad
Height1.73 Inches
Length6.02 Inches
Weight1.14 Pounds
Width4.88 Inches
Part Number10198A
Model10198A

2. LepoHome

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Wood, 3Pcs HSS Titanium Coated Step Drill Bit Set, Sheet Metal Hole Drilling Metric 4-12mm/4-20mm/4-32mm, 1/4" Hex Shank Drive Quick Change High Speed Steel Cone Drill Bit for Plastic

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LepoHome #ad - Package included 3-piece hss groove step drill bit 4-12/ 4-20/ 4-32mm. More capable and durable. Not suitable for hard and brittle materials such as stainless steel, tile floors, walls etc.

Widely usedperfect step drill bits suitable for drill holes in various material: within 3mm/012 inch iron plate, glass, Aluminum Plate; within 5mm/02 inch wood, pvc sheet, Copper Plate, Insulation Boards.11/4" hex shaft drives are suitable for all kinds of for home DIY power drills. Set includesbit #1 5 steps: 4-12mm 4mm, 18mm, 10mm, 28mm, 12mm; bit #2 9 steps: 4-20mm 4mm, 6mm, 18mm, 8mm, 10mm, 10mm, 30mm, 14mm, 12mm, 16mm, 8mm, 20mm; bit #3 15 steps: 4-32mm 4mm, 8mm, 12mm, 6mm, 22mm, 24mm, 6mm, 20mm, 26mm, 14mm, 16mm, 32mm.

High step design let you feel the stop and never drill bigger in mistake. Materialhss combined with a titanium coating. Easy drillingtwo-flute design for smoother cutting.
BrandLepoHome #ad
ManufacturerLepoHome #ad

3. uxcell

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Uxcell Step Drill Bit HSS 3mm to 13mm 11 Sizes Titanium Coated Straight Flutes Hex Shank for Metal Wood Plastic

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uxcell #ad - It can also help to enlarge existing holes and clean edges. Shank type: 6. 3mm hex shank; material: high speed steel with titanium Coated; Drilling Diameters: 3mm, 8mm, 7mm, 12mm, 4mm, 6mm, 11mm, 5mm, 9mm, 10mm, 13mm.

This step drill bit is durable and strong enough to punch and drill clean holes in materials like metal, wood, etc. Avoid falling the bits from high place. Please keep it properly preserved. Suitable for hand-held drilling rigs, bridge doors and windows, milling machines and machining centers, drilling machines, for metal sheet, home appliances, maintenance and modification, etc. Note: high temperature will affect the working life, please use coolant while drilling on metals to ensure the drill bit working properly. It is great for drilling holes for iron, wood, aluminum, copper, metal, plastic, PVC board and many other types of sheets.
Branduxcell #ad
Manufactureruxcell #ad
Part Numbera19042700ux0276

4. NACHEE

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Plastic Wood, NACHEE 3Pcs Titanium Coated Step Drill Bit Set, HSS Cone Drill Bit with 1/4" Hex Shank Drive Quick Change (Metric 3-12 mm 4-12 mm 4-20 mm)for DIY Woodworking

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NACHEE #ad - Two-flute design, smooth cutting. Suitable for hand-held drilling rigs, bridge doors, and machining centers, for metal sheet, and windows, and modification, drilling machines, maintenance, home appliances, milling machines, etc.

It can also help to enlarge existing holes and clean edges. Performs well in heat, corrosion, and rust resistance. A necessity for family or handyman or professionals. High-speed steel construction and for longer cutting edge life even at extreme temperatures. Perfect for home repairs and light jobs such as drilling holes in aluminum, Insulation Boards, PVC sheet, copper, Wood, and many other types of sheet metal.

The step drill bit is durable and strong enough to punch and drill clean holes in materials like wood, plastic etc. Titanium plating process to reduce friction and heat. The drill tip adopts a 135°bifurcated tip design, clears chips faster, prevents the step drill bit from slipping during operation.
BrandNACHEE #ad
ManufacturerNACHEE #ad
Height1 Inches
Length4 Inches
Width3 Inches
Part Numbernc drillbit4
Modelnc drillbit4

5. PRECIHW

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4mm-32mm 3/16" to 1-1/4" High Speed Steel Titanium Coated Multi Step Drill Bits for Sheet Metal Hole Drilling Cutting, Aluminium and Wood Drilling Hole, 15 Sizes Step Drill Bit, HSS Multi Size Unibit Drill Bits for Metal

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PRECIHW #ad - A must-have for handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, copper, aluminum, iron and many other types of soft metal sheet. Size includes - one drill with 15 steps: includes 3/16", 10, 1", 1-1/8", 24, 6, 28, 1/4", 7/8", 5/16", 15/16", 32mm, 1-1/4" 4, 3/8", 9/16", 13/16", 1-3/16", 20, 1/2", 30, 18, 16, 22, 14, 12, 8, 26, 5/8", 11/16", Which can fit the majority of brands currently on the market.

Hss titanium coating - high speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.

Two-flute design - 1/4'' hex shank fits into power tools chuck securely and eliminates slip; The drill tip adopts a 135°bifurcated tip design, prevents the step drill bit from slipping during operation. Clear laser measurements - the well-manufactured bits come with very highly visible laser measurements for you to easily find the size you want, improving your drilling accuracy.
BrandPRECIHW #ad
ManufacturerPRECIHW #ad
Part NumberL3015-JTZ2

6. STROTON

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STROTON 4-32mm Metric 6% Cobalt Step Drill Bit for Stainless Steel and Hard Metal 15 Steps

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STROTON #ad - This cobalt step drill bit is typically capable of running two to three times Faster. Despite the higher price, the cost per hole when Using Cobalt Drill Bit Will be the Lowest, Since It Can Produce So Many More Holes.

4-32mm 15 steps 4mm, 24mm, 14mm, 22mm, 10mm, 30mm, 20mm, 16mm, 18mm, 8mm, 28mm, 12mm, 6mm, 26mm, 32mm. Grinding the cutting edge three times, with the high hrC and Heat Resistance of the Material, wood, Ducts, Iron plate, Aluminum, Desigh for Cutting through Stainless steel, PVC and Plastic. Premium m35 6% cobalt steel, 66-69 hrc rockwell Hardness Scale, usually give the best heat, Wear and Chip Resistance and Long Tool Life.
BrandSTROTON #ad
ManufacturerSTROTON Ltd #ad
Part NumberCobalt-15s-(4-32mm)
ModelCobalt-15s-(4-32mm)

7. HYMNORQ

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Etc., Hymnorq Metric Titanium Coated HSS Spiral Groove Step Drill Bit Set of 3pcs 4-12/4-20/4-32mm with 1/4" Hex Shank Packed in Reusable Case for Cutting Holes in Iron Plate Aluminum Plate

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HYMNORQ #ad - One drill bit can drill the entire range of holes necessary on a countertop, speeding up installation of fixtures. Made of high quality hss high-speed steel 4241 and coated with Titanium for prolonged life.

The finished hole can often be made quite smooth and burr-free, especially in plastic. Ideal for use in electrical work where thin steel, aluminum or plastic boxes and chassis are encountered. The short length of the unibit and ability to vary the diameter of the finished hole is an advantage in chassis or front panel work. Commonly used on sheet metal and in general construction.

Save you time and effort. Self-starting, no need of center punch. Automatically deburrs holes left by other bits, as the sharp increase to the next step size allows the cutting edge to scrape burrs off the entry surface of the workpiece. Conical bit with a stairstep profile to be used for drilling 19 hole sizes ranging from 4-32mm, to replace 19 individual drill bits.
BrandHYMNORQ #ad
ManufacturerHymnorq #ad
Part NumberDC015

8. CO-Z

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CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case

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CO-Z #ad - All the bits come in a well-organized case for easy transport and storage. Chuck sizes. Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. Please mark the spot that you are to drill for easier drilling and improved drill bits life. The board must be smaller in thickness than the height of step drill bits. Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come. Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in.
BrandCO-Z #ad
ManufacturerCO-Z #ad
Height6.1 Inches
Length4.33 Inches
Weight1.15 Pounds
Width1.57 Inches
Part NumberCO-Z SDB-0000
ModelCO-Z SDB-0000

9. HTWORGRE

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Hex Shank Hss Cone Uni Bit Kit for Hole Woodsize 3-12/4-12/4-20mm, 1/4inch High Speed Steel Titanium Coated Metric Straight Groove Step Drill Bits Set with Automatic Spring Loaded Center Punch Power Tools, Step Drill Bit Set for Metal

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HTWORGRE #ad - Materialhss combined with a titanium coating. Widely usedperfect step drill bits suitable for drill holes in various material: within 3mm/012 inch iron Plate, Insulation Boards. One-year warranty: for customer satisfaction and 1-Year warranty of step drill kit can be guaranteed.

It is better clamped on the pistol drill to prevent slippage and shedding during the rotation. Set includesbit #1 5 steps: 4-12mm 4mm, 8mm, 30mm, 18mm, 14mm, 10mm, 6mm, 26mm, 20mm, 16mm, 28mm, 16mm, 12mm, 12mm; bit #2 9 steps: 4-20mm 4mm, 8mm, 8mm, 18mm, 10mm, 6mm, 24mm, 6mm, 10mm, 14mm, 22mm, 20mm; bit #3 15 steps: 4-32mm 4mm, 12mm, 32mm ;1 Automatic Spring Loaded Center Punch Power Tools.

If you have any questions, Please Contact Us. Not suitable for hard and brittle materials such as stainless steel, tile floors, PVC sheet, Copper Plate, Aluminum Plate; within 5mm/0.2 inch wood, glass, walls etc. Hexagonal design : hex shank fits into all power tools more easily and securely, especially for locking into quick change chuck. More capable and durable.
BrandHTWORGRE #ad
ManufacturerHTWORGRE #ad
Part NumberGU-5

10. Chiloskit

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Chiloskit 3 Pcs Large HSS Steel Step Cone Drill Titanium Bit Set for Metal/Wood Drilling Hole4-12/20/32mm dint

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Chiloskit #ad - Titanium nitride coating for Cooler Running, can effectively extend the service life of the drill. Automatically deburrs holes as you Drill. 3 sided shanks prevent slippage when in shank. Material : High speed steel. Long life ! Widely application - the step drill bits can be used to chamfer, bur, plastic material, and drill or enlarge holes. Widely used to cut holes in a variety of material like steel, aluminum alloy, thin iron, wood, PVC. Not for stainless steel. Two-flute design Gives You Faster, Smoother Cutting. The step drill bits can work with aluminum alloy, and wood.
BrandChiloskit #ad
ManufacturerPreamer #ad
Weight0.55 Pounds
Part Number4-/12/20/32mm
ModelDLP-1221