Material: tungsten steel + 45# carbon steel
Size: 2.8x8mm, 3.0x8mm, 3.2x8mm, 3.5x8mm, 4x8mm
Function: screw countersunk hole
Feature:
HSS drill bits, offer the best heat resistance and good performance for drilling.
Good toughness, wear resistance, strong drilling capacity.
Stored in sealed package with good protections.
Easy to drill, fast cutting.
Suitable for a wood working processing.
Package Including:
5 * Drill Bits
5 * replaceable bits