Type: screw tap
Coarse / fine handle: handle thick handle
Machine / hand: machine
Applicable scope: instrument, instrument
Product Name: screw tapProduct type: N+SP/N-SP
N+SP/N-SP: spiral screw tap tap tapping is different with other ordinary hand taps into the slot line, which is a spiral screw tap, screw tap in the process, to increase the rotation of the spiral groove can easily put the iron from the hole, so as to avoid iron residue or plug groove, and cause tap break edge crack, so it can increase the life of cutting out the thread taps and the highest precision.
SF express: (!) Yuantong express and