HANGZHOU PANGONG TOOLS CO.,LTD is a High quality tools manufacturer in china for threading tap die sets,ratchet wrenches and car maintenance tool...We are working with a variety of tradesmen to solve endless fastening challenges :TUNGSTEN is the answer.Wether to create new threads from raw material or repair damaged and worn threads,achieving a precise fit is essential. TUNGSTEN sets the standard for delivering quality every step of the way in your threading application.Although there are hundreds of different types of fasteners,most of them have the same basic design:a spiral groove inside a hole matches the threads on the outside diameter of a screw of bolt. TUNGSTEN Taps & Dies are the tools used by professional to create threads and solve the most challenging fastener applications.---------------------Mrs Cherry / Sales managerHP(whats app): 86-15988838812 Email:sales5 (at) global-pan.comSkype:cherryfang90 WeChat: zihan-8812 QQ:705045041Hangzhou PanGong Tools Co.,Ltd. Website: www.pan-tools.com http://tapdiesets.en.alibaba.com