ANPTGHT Titanium Combination Drill tap bitsset are made of high speed steel 4341, which can ensure sharp, fast executionand retain strength and efficiency. The surface is treated with a titaniumalloy, which greatly improves the cutting performance of the drill, is morewear-resistant and prolongs the service life.

13pcs drill tap kit include SAE and metricsizes, Suitable for most commonly used screw tapping. Includes storage case andquick change adapter for easy bit switching

SAE szie:
6-32NC,8-32NC, 10-24NC, 10-32NC, 12-24NC,¼-20NC

Metric size:
M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8x 1.25, M10 x 1.5

Specification
Material: HSS4341
Surface :titanium coated
1/4 inch hex shank

Package include

6 x SAE Drill and Tap Bits
6 x Metric Drill and Tap Bits
1 x 1/4" Hex Shank Quick ChangeAdapter
1 x storage case
1/4" hex shank for impact drill
1/4inch Hex shank quick change for impactdriver and electric screwdriver.

Follow the steps bellow, you will get niceclean threads in steel and aluminum and other materials

1.Go slow, Do Not force them

2.Use plenty of cutting oil and take yourtime

3.Cut and back out a little and cut againuntil it goes completely through

4.Drill a pilot hole that's slightlysmaller first on tougher metals

Tips:

1.1 / 4 hex shanks (6.3mm) is suitable forthree-jaw chuck, such as a hand drill, bench drill and tapping machine.

2. Low-speed cutting of holes in materials,suitable for processing soft metal with a thickness of less than 3mm.

2. When using the drill, the temperature ofthe material will be very high. Please add some water or coolant to prevent thematerial from smoking when in use.