Raytheon 21-hole binding rubber ring A3 comb-type tender plastic rubber ring binding machine with a4 binding rubber ring 6MM-51MM plastic binding ring loose-leaf binding rubber ring
6mm black 100 pieces are suitable for 20 pieces of 70g paper 6mm white 100 pieces are suitable for 20 pieces of 70g paper 6mm blue 100 pieces are suitable for 20 pieces of 70g paper 8mm