1.R3-R10 according to users'needs. 2.Fixing and cuting round corner on certificate,cards,bankbook,film,photographic film . Corner Punching MachineMaximum thickness of paper cut: 30mmThe size of round corner:(standard accessories of leave-factory) R6,R10; Otherwise provide the specifications of R3-R10 according to users’ needs.Range of application:Be used for fixing and cuting round corner on ...