ชุดต๊าบเกลียว ชุดทำเกลียวใน 9 ชิ้น TAP WRENCH SET

Adopting high quality bearing steel, which is durable and has long service life This set includes 1 piece T-shaped tap wrench, 4 pieces taps and 4 pieces twist drill bit T-shaped tap wrench design makes it can one-hand operation, more convenient to use It can improve the efficiency of processing thread, it is a necessary tool for hand tapping operation