Conventional hole diameter: 2.5mm 3.2mm 3.5mm 4.2mm 4 specifications, red needle can be interchangeable, a punch can play a number of pliers specifications, if you buy a 3.5 punch, but also want to play 4.2 Of the hole, and then buy a set of 4.2 red punch can be used, the use of attention, 3.5mm punching pin should be used with 3.5mm rushed to use, or do not wear, a long time punch red can be used angle grinder gently Grinding can continue to use -
