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 ... of application:Be used for fixing and cuting round corner on certificate,cards,bankbook,film,photographic film and books, ...