3/5/6PCS HSS Cobalt High Speed Steel Coated Hole Metal Step Drill Bit Set Cone with Bag/Aluminum Storage Case 6Pcs with Aluminum Case

Feature:
1.Unique ladder structure, round shank. Straight grooves.
2.Automatically De-burrs Holes as you Drill. Two-flute Design Gives You Faster Smoother .
3.Nitride Coating for Cooler Running, and can effectively extend the service life of the drill bit.
4.Suitable for carbon steel plate, sheet iron, steel plate, insulation boards, wood. Cannot be used for stainless steel. Suitable for the workpiece 25° or less.

Specification:
Qty: 3/5/6PCS
Surface: Baking yellow + Nitriding
Material: HSS 4241 (Suitable for below 25 °artifacts, such as carbon steel, iron, steel, plastic, wood)

Size:
3/16-1/2''---3/16,1/4,5/16,3/8,7/16,1/2 (inch) -- 6.35mm (1/4”) Shank
1/8-1/2''---1/8,5/32,7/32,1/4,9/32,5/16,11/32,3/8,13/32,7/16,15/32,1/2 (inch) -- 6.35mm (1/4” )Shank
1/4-3/4''---1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4 (inch) -- 9.53mm (3/8") Shank
3/16-7/8''---3/16,1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4,13/16,7/8 (inch) -- 9.53mm (3/8") Shank
1/4-1-3/8''---1/4,3/8,1/2,5/8,3/4,7/8,1,1-1/8,1-1/4,1-3/8 (inch) -- 12.7mm (1/2") Shank

Package included:
3X Step Drill Bits
Or 5X Step Drill Bits+1x Storage Case
Or 6X Step Drill Bits+1x Storage Case

Note:
Please allow 1-3cm difference due to manual measurement.
Due to light and screen difference, the item's may be slightly different from the pictures.

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