CNBTR Round Leather Hole Punch Hollow 5-4.5mm Round Drive Leather Punch and Round Leathercraft Hole Punch Tool Pack of 5 Pack of 5 Leathercraft Hollow Hole Punch Cutter Tools Different size of Inner Hole Diameter:: 0.5,1.5,2.5,3.5,4.5mm can meet your multi choice Using for DIY leather, pattern punch, belt punch, production and so on. Easy to use by placing gasket hole punch over area that needs a hole and hit back end with a hammer or mallet. Metal round leather hole puncher,when making purses, file packages or any custom leather works.