Description: The tap and wrench are made of high quality steel. They are durable and have long service life. T-shaped tap wrench design makes it can one-hand operation, more convenient to use. They can improve the efficiency of processing thread. It is a necessary tool for hand tapping operation. With the help of this tap & wrench set, thread cutting will become more easily and precisely. Size Chart: 9Pcs Set: Tap Model: M3 x0.5mm, M4 x0.7mm, M5 x0.8mm, M6 x 1.0mm Twist Drill Bit Diameter: 2.5mm / 0.09inch, 3.5mm / 0.14inch, 4mm / 0.15inch, 5mm / 0.2inch 10Pcs Set: Tap Model: M3 x0.5mm, M4 x0.7mm, M5 x0.8mm, M6 x 1.0mm,M8 x 1.2mm Twist Drill Bit Diameter: 2.5mm / 0.09inch, 3.5mm / 0.14inch, 4mm / 0.15inch, 5mm / 0.2inch Package Includes: 9Pcs Or 10Pcs T-Handle Tap Wrench Set(Optional) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!