Nitride Black Drill tap bits are made of high speed steel 4341, which can ensure sharp, fast execution and retain strength and efficiency. The surface is treated with a Nitride Black, which greatly improves the cutting performance of the drill, is more wear-resistant and prolongs the service life.
Drill tap kit include SAE sizes, Suitable for most commonly used screw tapping.SAE Included 6-32NC, 8-32NC, 10-24NC, 10-32NC, 12-24NC and 1/4-20NC, Includes storage case

Combination tap drill set -----Drill, tap, deburr and countersink in one quick and easy action,and complete job on copper, brass, aluminum, sheet metal ,mild steel and plastic.work completely, greatly save processing steps and time costs, and improve work efficiency.

Each drill tap bit is engraved with the right size, which is convenient for you to choose the size that suits you. Strong hex shank ensures strong connection to impact drill.a tapered end to prevent excessive knocks. Back taper exceeds the tap to prevent over-drilling and damage to the thread.

Included convenient swivel storage case,Swivel feature props up tap drill bits and securely holds them in place until ready to use. The storage case folds up neatly and is convenient to travel with on different job sites and locations.
Specification

Material: HSS
Size:6-32NC, 8-32NC, 10-24NC, 10-32NC, 12-24NC and 1/4-20NC
Package include
6 x drill tap bits set
1 x storage