Profile: Hangzhou GSR-Threads Tools Co. Ltd specializes in taps and dies. Our main business range are production and sales of hardware tools, including key products as threads cutting tools such as taps and dies, drilling tools such as twist drill bits. Taps are mainly used for precise cutting of internal threads. GSR taps include hand taps, machine taps, as well as professional taps and tap kits. We supply all kinds of high quality thread tools. Our thread repair kit normally consists of a screw tap, a twist drill, and install handle, a break tool and thread inserts, a tap wrench may also be required when doing the thread repairing. For convenience, we offer different types of thread repair tool kits