A4 SIZE Comb-type Binding Machine 230 Manual Rubber Ring Clamp Dual-use Machine 21 Hole File Punch Binding Machine 1pc ,Easy to Use

Punching thickness: 15 sheets/time (70gA4) Maximum binding: 200 sheets (70gA4) Number of punched holes: 21 Rubber ring diameter: 6-22mm Feed method: horizontal feed