◎ Step Drill Bit Set HSS Cobalt Multiple Hole 50 Sizes Cobalt Titanium Conical Carbide Drill Perforator Hole Cutter Tool With Case
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- is-customized：Yes
- Use：Metal Drilling
- Material：High Speed Steel
- DIY Supplies：Metalworking
- Type：Center Drill Bit
- Brand Name：vieruodis
- Certification：NONE
- Origin：Mainland China
- length：other
- Model Number：drill bits
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- This is a set of step drills made of high speed steel 4241. Different specifications can meet different drilling requirements.
- Note:
- 1. Hand drill (above 550W) thickness 1-2mm hole diameter greater than 14mm requires bench drill operation. (It is recommended to drill a workpiece with a stainless steel hardness of 25° or less)
- 2. When drilling operation water injection and cooling while drilling effectively extend the service life of the drill. (Recommended speed 250-400)
- Features:
- Made of fine quality high speed steel wear resistant not easy to rust has a long service life.
- Double groove design for faster and smoother cutting.
- Different specifications can meet different drilling requirements.
- Suitable for workpiece with hardness is less than 25° such as carbon steel iron plate aluminum plate pvc plate wood board and so on.
- Shank Type: Triangle
- Cooling Type (internal/outer cooling): water injection cooling
- Material: high speed steel 4241
- Category: Reaming drill
- Shank Diameter: 6 (mm)
- Series: Imperial step drill
- Size:
- 1/4- to 1-3/8- (10 steps): 1/4- 3/8- 1/2- 5/8- 3/4- 7/8- 1- 1-1/8- 1-1/4- 1-3/8-
- 3/16- to 7/8- (12 steps): 3/16- 1/4- 5/16- 3/8- 7/16- 1/2- 9/16- 5/8- 11/16- 3/4- 13/16- 7/8-
- 1/4- to 3/4- (9 steps): 1/4- 5/16- 3/8- 7/16- 1/2- 9/16- 5/8- 11/16- 3/4-
- 1/8- to 1/2- (13 steps): 1/8- 5/32- 3/16- 7/32- 1/4- 9/32- 5/16- 11/32- 3/8- 13/32- 7/16- 15/32- 1/2-
- 3/16- to 1/2- (6 steps): 3/16- 1/4- 5/16- 3/8- 7/16- 1/2-
- Shank diameter:
- 1/4- to 1-3/8-: 8mm / 0.3in
- 3/16- to 7/8-: 8mm / 0.3in
- 1/4- to 3/4-: 8mm / 0.3in
- 1/8- to 1/2-: 6mm / 0.2in
- 3/16- to 1/2-: 6mm / 0.2in
- Package list:
- 5 x Step Drill
- 1 x Aluminum Box
- FAQ
- Q: Frequently Asked Question
- A: Answer to the question above.
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