1PC 3870 Practical 21 Holes A4 Manual Comb Book Binding Machine,can Punch 12sheets At A Time ,Easy to Operate

1. It is manual and portable. 2.Depth margin is adjustable to suit the size of comb being used 3. The sound of punching is not loud, so it will not effect the working environment. the quality of the page :12page /everytime (70g ) the quality of the holes :21 piece