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