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Feature

Drill accurate center holes in material prior to turning, or use as a starter bit for accurate holes
Double ended.
Top Quality M2 HSS
Standard 60 degree included angle
It also used as starter holes to prevent a drill bit from "walking".

Description

Features:
MaterialHSS
Color :Silver Tone
High Speed Steel
Standard 60 degree included angle
precision import
double ended
Specification:
This listing is for a set of 5 HSS Center Drills
Each drill has a double end and is ground with a standard 60 degree included angle
The set includes 1 each of the following sizes:
1 with 3mm body diameter & 1mm drill tip diameter
2 with 4mm body diameter & 1.5mm drill tip diameter
3 with 6mm body diameter & 2.5mm drill tip diameter
4 with 8mm body diameter & 3.15 drill tip diameter
5 with 12mm body diameter & 5mm drill tip diameter
Usage:
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
Package Included: