Standard split double-side cam 17''-28'' 1)Size:17''-28''; 2)installing on the NP series offset print machine; 3)Material: 100% steel; Please tell us the size of L,H,R, and printing circumference when you ordered. Best quality with numbering machine and well service for numbering machine We accept the special design, and small quantity order. Anyway, we make the realiable quality and reasonable price for you as our target.Hoping more and more customers use our CHANG LING numbering machines.Any requirement or advice, please contact with us freely by email / fax / telephone,we are pleased to reply you soonest.