GBC Binding Combs Plastic 21 Ring 500 Sheets A4 51mm Black Ref 4028187U [Pack 50] - 335043

A4 size, 21-ring, (available in 13 diameters and four colours) For use with all Rexel and GBC standard comb binding machines Capacity: 500 Sheets Size: 51mm Boxed 50 Black - 335043