- High quality construction: both the upper and lower blades are hardened steel, with a die-cast alloy base for rigidity, impact resistance, and long-term durability. - Punching capacity and waste management: punches rectangular holes of 3 x 8 mm; the hole count ranges from 1 to 21; features a large-capacity drawer-style waste box to reduce frequent emptying. - Manual operation and blades: hand crank design is labour-saving and easy to use, with no power required; the 21-hole full-pulling knife and the upper and lower blades are stainless steel. - Coil binding capability: easy-to-use electric coil insert makes binding coil files quick and easy. - Ergonomics and versatility: full-grip hand punch designed for left-handed, right-handed, or two-handed operation. - Use scenarios: bind training manuals, reports, and proposals for meetings; create course materials and handouts for classrooms or seminars; assemble project portfolios for client presentations.