HSS Drill Tap Bit Set , SAE/Metric Combination Drill Tap Kit,Titanium Coated Drill Bits with Quick Change Adapter for Drilling, Tapping, Deburring,Countersinking - BeQell 13pcs

• 【Package Includes】-Total 13pcs Drill tap bit set. 6pcs SAE:1/4-20NC,12-24NC,10-24NC,10-32NC,8-32NC,6-32N.6pcs Metric:M3x0.5,M4x0.7,M5x0.8,M6x1.0,M8x1.25,M10x1.5.1pc Quick Change adapter and storage case.Suitable for most commonly used screw tapping. 【3 in 1】-Drilling, tapping, deburring and countersinking on copper, brass, aluminum, metal sheet and plastic in one step, greatly save processing steps and time costs, and improve work efficiency. 【1/4" Hex Shank】-Unique back-tapered design protects against thread damage from over-drilling, while the sturdy hex shank ensures a strong connection to the drill chuck. This tap drill-bit set also includes a quick-change adapter for effortless bit changes. 【Premium High-Speed Steel】-Made of high speed steel, treated with a titanium alloy on the surface,inreases hardness, wear resistance and durability,provides longer service life.Spiral Groove Design helps to chip quickly,improves drilling efficiency. 【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.