5Pcs 60 Degree HSS Center Spotting Drill Bits Combined Countersink High Speed Tools,Default NO

Feature:

1. General Materials centering hole machining and chamfering machining. Using cobalt high speed steel material.

2. Cutting fast, good chip evacuation, edge clear, sharp and durable, the drill shank has a specification lettering.

3. Without protecting chamfers composite center drill.

Specification:

60 degree tip angles

5 Size: 1/8\",3/16\",1/4\",5/16\",5/32\"

Material: HSS

Applicable hardness: HRC40 or less

Use: Suitable for positioning and Chamfering processing before drilling.

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