KURSTOL HSS Tap Bit Set - 13pcs SAE/Metric Combination Drill Tap for Drilling, Tapping, Countersinking, Titanium Combination Drill with Quick Change Shank Extension Rod Fixed on Tapping Machine - K2921L01

• 【Package Includes】13 pieces SAE/Metric Tap Bit Set--6pcs SAE:6-32NC,8-32NC,10-24NC,10-32NC,12-24NC,/4-20NC.6pcs Metric:M3x0.5,M4x0.7,M5x0.8,M6x1.0,M8x1.25,M10x1.5.1pc Quick Change Extension Rod.Multiple sizes to meet customers' needs for processing multiple materials and different diameters. 【3 in 1 Function】Drilling, Tapping, Chamfering/Countersinking in one step, saving processing steps and processing time. 【Spiral Groove Design】Quickly discharges chips, facilitates heat dissipation, and improves drilling efficiency. 【Premium High-Speed Steel】High-quality material with titanium nitride (TIN) surface treatment, inreases hardness, wear resistance and durability, and provides longer service life. 【High Compatibility】They can be used with electric drill, bench drill, drill press and tapping machine (If you choose a electric drill, please drill vertically and do not swing from side to side. The drilling feed speed should not be too fast,Recommended 2000-5000 RPM,MAX 5000 RPM). Notice: Only flat drilling mode can be selected, impact and hammering modes cannot be used.