Plain metal binding for file folder,Binding materi

Plain metal binding for file folder,Binding material 1) Durable 2) low price with high quality 3) Corrosion Resistance 4)Easily attachable and detachable We have the full range of the ring binder mechanism that the length from 89mm to 300mm and the ring diameter from 8 to 104mm.2-D ring binder: item NO.: PD123-2-20/20 PD123-2-25/20 PD133-2-35/26 Packing:500pcs/carton 500pcs/carton 400pcs/carton G.W: 15kg 16kg 17kg Measurement: 52*29*17cm 53*29*20cm 54*31*32cm Different specifications are available according to customers' requirements. 2-R ring binder Item NO.:PR123-2-25/20 Packing: 500pcs/carton Weight: 16kg Measurement: 53*29*20cm Different specifications are available according to customers' requirements.