Features:
-100% brand new and high quality.
-It can used as starter holes to prevent a drill bit from "walking".
-Center and spotting drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.
-Used for producing center holds in components or work pieces with require machining between centers.
-General Materials centering hole machining and chamfering machining. Using cobalt high speed steel material
-Cutting fast, good chip evacuation, edge clear, sharp and durable, the drill shank has a specification lettering
(Without protecting chamfers composite center drill)
-Each drill has a double end and is ground with a standard 60 degree included angle
Specifications:
-Material : HSS
-Type : A-Type
-Tip Angles : 60°
Size:
1.5*4mm:
Working blade length:3mm
Overall Length:38mm
1*3mm:
Working blade length:2mm
Overall Length:35mm
2.5*6mm:
Working blade length:5mm
Overall Length:45mm
2*5mm:
Working blade length:4mm
Overall Length:40mm
3.15*8mm:
Working blade length:5mm
Overall Length:50mm
3.5*8mm:
Working blade length:5mm
Overall Length:50mm
3*8mm:
Working blade length:5mm
Overall Length:50mm
4*10mm:
Working blade length:6mm
Overall Length:55mm
5*12mm:
Working blade length:6mm
Overall Length:60mm
6*14mm:
Working blade length:8mm
Overall Length:65mm
Package Included:
5/10pcs x HSS Center Drill