Header punch standard JIS, ANSI, DIN, ISO, BS, GB, and NON-STANDARD . The common head style: Flat head, pan head , oval head , binding head , round head, truss head, button head, pf head, cheese head, fillister head and so on . The common driverï¼? Phillips , Phillips and slot combination, slotted, hexagon, six-lobe (torx), six-lobe tamper , six-lobe/slot , pozidriv , square, square/slot , Phillips/square, triangle and so on . The coating about the screw header punch: Without coating, With TIN coating-yellow coated, With TILAN coating-black coated The standard size: 12x25mm 14x25mm 18x25mm 23x25mm The unit weight about the header punch: 12x25mm: 25g/pc 14x25mm: 30g/pc 18x25mm: 50g/pc 23x25mm: 80g/pc