metal ring binder, metal ring clip, stationery ring clip Material: strip steel 1. Surface treatment: nickel electroplating, nickel free (through the 10 mental detection and can provide the SGS reports) 2. Base width available: 15mm, 17mm,20mm, 26mm, 36mm, 45mm 3. Overall length available: 89mm, 123mm, 133mm, 152mm, 158mm, 171mm, 195mm, 210mm, 241, 264mm, 280mm, 285mm, 292mm, 384mm 4. Inside diameter: 15mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 65mm,78mm 5. Shape of ring: Q, R, D 6. Type available: patent products and common products 7. OEM service provided. Packing: 1. carton pakage 2. export standard delivery: 35 days once 30% deposit be comfirmed. Loading: Shenzhen or Guangzhou Sample: 1. Free samples offered. 2. Express charge is paid by the customer.