Uxcell Metric Tap Drill Bit Set, 2Pcs M6 X 1 Spiral Point Thread Taps And 2Pcs Descriptions: Tips: Drill holes with a twist drill bit first, then tap with a thread tap. The tapping angle should be 90 degrees vertical and stable. The higher the hardness, the slower the speed. Fast speed with small torque; slow speed with high torque. Metric Tap Drill Bit Set: Tap thread size: M6 x 1 (right hand); twist drill bit size: 5mm (right hand). 6542 (M2) high speed steel tap and drill bit set offers excellent heat resistance and hardness for durability and longevity, and good cutting performance for clean, precise holes. Wide Applications: Thread tap and drill bit kit can create new threads or re-thread damaged or jammed threads. Spiral Point Tap is suitable for through-hole threads. Used for cast iron, aluminum, stainless steel, carbon steel, aluminum alloy, bronze and hard plastics. Features: Thread Tap: Spiral point and straight flute design, clear threads and no burrs, downward chip removal, fast and precise tapping. Machine tap is used in drill presses, tapping machines. Not recommended for hand use and electric drill tapping. Twist Drill Bit: Spiral flute chip space design to remove chips quickly and cleanly. Provide neat and smooth cuts. Finish: Titanium coated drill and tap sets offer enhanced hardness, corrosion and rust resistance, heat resistance, and reduced friction for smoother, faster drilling and tapping. Use with tapping oil to get higher quality threads and more durable taps. Use an appropriate lubricant to reduce friction and heat build-up. Tips: Drill holes with a twist drill bit first, then tap with a thread tap. The tapping angle should be 90 degrees vertical and stable. The higher the hardness, the slower the speed. Fast speed with small torque; slow speed with high torque. The tapping depth should not exceed 1.5 times the diameter of the tap.