Description:
Material: High Speed Steel 4241
Black chamfer drill material: 45 steel
Shank: 1/4 Hex
Color: Black
Weight: 100G
Quantity: 4pcs Drill bits with Wrench
Scope: Can drill out sunk hole for screw cap while drilling the screw hole，
and keep them on the same axial; Suitable for the drilling machines with collets or adapters;
Suitable for drilling hard woods.

Specification: 

Chamfer Drill	Size	Length
6#	2.38mm	55mm
8#	2.78mm	60mm
10#	3.175mm	65mm
12#	3.56mm	70mm

Package included:
1x 6# Drill Bit
1x 8# Drill Bit
1x10# Drill Bit
1x 12# Drill Bit
1x Wrench