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5pcs High Speed Steel Step Drill Bit Set Spiral Groove Round Shank Twist Drills Drilling Tool

5pcs High Speed Steel Step Drill Bit Set Spiral Groove Round Shank Twist Drills Drilling Tool

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This is a set of step drills made of high speed steel 4241. Different specifications can meet different drilling requirements.

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.

Specifications:
Material: high speed steel 4241
Color: yellow
Quantity: 5pcs
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 size: 154 * 120 * 43mm / 6.1 * 4.7 * 1.7in
Package weight: 480g / 1.1lb

Package list:
5 * Step Drill

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