[Correspondence size] A4[Perforation capacity] 5 sheets (80gsm)[Number of holes] 30 holes/A4[Hole diameter] 5.5mm[Pitch] 9.5mm[Paper distance] 3.6mmSP-30N is a 30-hole sliding punching machine, with the world's first patented structure, it can be punched in one go only by sliding.Because the cutter ..