3pcs HSS High Speed Steel Spiral Grooved Drill Bits Hole Cutter for Wood Stainless Steel Metal,Default NO5250

Feature:

1. These steps drill or pagoda drill bit contains 3 pcs: 4-12mm, 4-20mm and 4-32 mm, 29 sizes.Can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole.

2. Double cutting blades design provides faster, smoother drilling,automatic deburring from hole when drilling.

3. Made of high speed steel, titanium coated high quality step drill bits.Titanium drill bit is particularly suitable for processing copper and aluminum pieces / mold steel / spring steel / cast iron pieces / iron and other metal materials.

4. Quick assemble: 1/4\"(6.35mm) hex shank work with most drill or drills with 1/4\" chuck

5. Used for wood and steel drilling processing.More steps and dense make the hole smoother.

Specification:

4-32mm (4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm)

4-20mm (4,6,8,10,12,14, 16,18,20mm)

4-12mm (4,6,8,10,12mm)

Handle: Hex shank, shank diameter 6.35MM

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