50 Sizes HSS Step Drill Bit Set with Automatic Center Punch

Features:

50 Sizes Step Drill Bits -- The HSS step drill bit set includes 5pcs standard step drill bits which can process 50 sizes hole, 1/4in and 3/8in shank sizes compatibility with all major press drills and drills.

Durable Titanium Coated Bits -- High speed steel straight grooved drill bit along with titanium coating ensures outstanding durability and sharpness, cut more smoothly, can reduces the friction, runs cooler hence lengthening the service life.

Automatic Center Punch -- Solid brass construnction center punch help you mark the center point that you want to drill, knurled non-skid handle improved grip with replaceable lid for extra stength.

Wide Application -- The sharp drill bits can easily drill perfect holes in the aluminum, copper, steel, metal sheets and plastic and wood board.

Alluminum Case for Easy Store -- Come with an exquisite aluminum case protects the drill bits not easy to dull and prolongs the drills lifespan.

Specification:

Material: High-Speed Steel + Titanium Coating

Color: Blue + Sliver

Step Size: 3/8in shank: 1/4in - 1-3/8in

3/8in shank: 3/16in - 7/8in

3/8in shank: 1/4in - 3/4in

1/4in shank: 1/8in - 1/2in

1/4in shank: 3/16in - 1/2in

Shank Length: 25mm/1in

Center Punch Length: 130mm/5.1in

Case Size: 150*140*40mm/5.9*5.5*1.6in

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