Punch up to 15 sheets each time Punch A4 (21 Rings), A5, B5 format Binding documents up to 500 sheets Use all sizes of plastic comb max. 51mm Punch margin is adjustable to suit the size of comb being used Side margin is adjustable to select which format sheet to punch Document measure to determine which comb size to use 3 Selectable pull pins Machine dimension (mm): 376 x 245 x 300mm Machine weight: 5.0 kgs