?Material?This product is forged by high speed steel, high hardness, strong and durable. The head of holder adopts diamond-shape design, non-slip and beautiful appearance. Handles is made of high quality bearing steel, the chuck made of alloy steel, comfortable grip, excellent quality. The structure is simple, convenient loading, fold anti-corrosive and anti-rust. ??T-shaped or 7 word shaped design?Adjustable T Handle Tap Wrench Machinist Tool Reversion, can be single hand operation, more convenient using. It can improve work efficiency, is a good partner for DIY tapping. ??Widely Application?It is used for hand tapping taps, adjustable forward and reverse, ratchet rotation, compact and convenient, used in applications such as routine maintenance, repair work and for re-threadingwhere high accuracy and tolerance thread is not critical. Suitable for bicycle repair, assemble furniture, machinery manufacturing, ect. ?Practicality?One tool fits more taps,Easy to operation even in narrow space,one pocket size type of threading machine.Is one of the essential tools in your toolbox. Using for general Wood, soft metal, aluminum, acrylic plate, PCB, etc. Using for processing and drilling(twist drill bits even can be using for electric drilland harder soft metal). ??Set Include?1 x Tap holder wrench,4 x Metric taps set ( 3mm-6mm taps ) ,4 x Drill Bits (2.5/3.5/4.2/5.0)