... ; 17.5; 19.5,21.5mm We can offer this punching machines:Product NoTypeSuitable materialVaries holesWeight(kg)5070YJC-21.5x8Steel,Al ... Ø13.5---21.5mm235071YJC-30x10Steel,al,CuØ13.5---30mm46Note:For JYC-21.5x8,5moulds offered to punch Dia 13.5mm ... .5mm;21.5mm.that is free payment.For YJC-30x10,Dia 17.5mm;19.5mm;22mm;24mm are free payment. hydraulic punching machine