TIKSCIENCE 13PCS Titanium Combination Drill Tap Bit Set Fit for Screw Thread Drilling Tapping Deburring Countersinking, with SAE and Metric Sizes Quick Change Adapter - Drill and Tap Set GZSZ01

• SAE and Metric Sizes - This drill tap kit includes SAE and metric sizes and is the most commonly used screw tapping. 6pc SAE includes: 6-32NC, 8-32NC, 10-24NC, 10-32NC, 12-24NC and 1/4-20NC, including 6 metric: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1.0, M8 x 1.25, M10 x 1.5. Drill Tap Bits Set - Each tap drill has its corresponding size in the storage box, so you can choose the exact drill bit effortlessly. The 1/4" (6.35mm) hexagonal shank has a tapered end to prevent excessive knocking.The back taper exceeds the tap to prevent over-drilling and thread damage. High Speed Steel 4341 Material - The surface of the titanium alloy combined drill bit is treated with titanium alloy, which effectively improves the cutting performance of the drill bit, is more wear-resistant, and prolongs the service life. Made of high-speed steel 4341, to ensure sharpness, speed, and maintain strength and efficiency. Improve Efficiency - Drilling, tapping, deburring, and countersinking can complete the processing of copper, brass, aluminum, sheet metal, low carbon steel, and plastic at one time, improving work efficiency. Deepening the chip flute helps to remove the chips and debris on the tap, reducing friction and heat, so as to achieve a faster and colder drilling process. Easy to Carry - This drill tap bits set is equipped with a storage box, which is convenient to carry and helps to keep the drill bit tidy.