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Feature

Durable and Resistance: Center drill bit is made of HSS high speed steel, with extremely sharp blade, low consumption and durable with impact resistance, wear resistance.
6 Difference Sizes: Drill tip diameter size of center drill bits including 0.20" 0.12" 0.10" 0.08" 0.06" 0.04".
Wide Usages: Center drill bits can be used to make conical holes for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking, as well as for producing center holds in components or work pieces with require machining between centers.
Available for all Kinds of Materials: Metal, Alloy, Copper, Iron, Wood, Aluminum, and so on.
Excellent After Sell Service: Within 90 days the quality of center drill bit is not completely satisfied, 100% refund.

Description

6pcs Drillpro HSS Center Drill Bits for Steel, Metal, Iron, Alum, Carbon Steel, Brass, and Wood

Specification:
A set of Center Drill Bits includes the 6 sizes:
#1 with 1/6" body diameter & 0.04" drill tip diameter
#2 with 1/6" body diameter & 0.06" drill tip diameter
#3 with 1/5" body diameter & 0.08" drill tip diameter
#4 with 1/4" body diameter & 0.10" drill tip diameter
#5 with 1/3" body diameter & 0.12" drill tip diameter
#6 with 1/2" body diameter & 0.20" drill tip diameter

Usage:
Center drill bits are used to drill a conical hole for a lathe center in order to make a starting point for a standard twist drill so as to prevent the twist drill from walking.
Center drill bits are also used for producing center holds in components or work-pieces with required machining between centers.

Instructions:
Choose a match type of center drill bits according to the hole type and the straight hole size of the machined parts.
The heat treatment hardness of center drill bit is between 63-66HRC appropriate.
Wash the rust-proof grease before using the center drill bit, so as to avoid chip sticking on the cutting edge.
The surface of work-piece should be smooth to avoid center drill bit being damaged.
The center drill bit should achieve the required position accuracy before drilling.

Notes:
Stop immediately in the processing of abnormality when using the center drill bit and find out the reason before processing;
Pay attention to the condition of center drill bits, especially the wear and tear of the cutting edge and timely repair;
Clean the center drill bit and use oil after using, keep center drill bits properly.

Why Choose DRILLPRO
Good quality and reliable brand.
Within 90 days product quality is not completely satisfied, please CONTACT US, 100% refund.
24-hour feedback excellent customer service.