metal 4 ring binder ring, 4 round ring binder clip Item: 4 ring clip Material: iron Surface treatment: nickel Length available: 153/210/280/292/300MM Width available: 15/17/20/26/36MM Inner diameter available: 16/17/19/20/25/30/32/35/38/40/50/65/75MM Shape of ring: Q/R/D/tilted D Patent products and conventional products offered OEM is available. Product name Ring binder Item Number PR292-4-30/20 Material Metal Color Sliver Surface treatment Environmental electroplating Length 292mm Ring number 4 Inside diameter 30mm Base width 20mm FOB price USD0.3-1.0 MOQ 5000pcs Place of Origin Guangdong China(Mainland) Packing 250pcs/carton Measurement 5230.523.5cm GW 18kgs NW 17kgs Payment term 30% advance,balance paid by T/T before delivery Production time 7-15 days Delivery term By shipping, airplane or express