Hand Screw Thread Tap Wrench Handle With 4pcs Straight Flute Taps M3/M4/M5/M6 Features: Wrench and taps are made of steel for durability and long service life. Tap wrench is very convenient and practical and it is a necessary tool for tapping. Adjustable chuck easily and firmly clamp the tap. Mainly used for hand tapping operation. This set contains four taps in different size for tapping various threads. It is a great tool set used to create screw threads on wood, plastic, aluminum or many other soft materials. Specifications: Material: Bearing steel Tap Size: M3, M4, M5, M6 Tapping On: Aluminum, wood, plastic and other soft materiel Instruction: 1, Insert cone part first and make sure the tap center line agrees with drilling center line. 2, Rotate tap wrench with a even force to feed tap, don't need to add force after feed. 3, Reverse rotate about 45 ° each time rotate tap to cut chip in order to avoid blocking. 4,  If it is difficult to rotate tap, stop adding force or tap will be broken. Package includes: 1 x Tap Wrench 4 x Taps