metal stationery file clip/metal ring clip material: iron color: nickel item code: TR261-26-25/17 length: 269mm width: 17mm inner diameter: 25mm outer diameter: 29mm height: 30mm ring distance: 9.5*25mm rivet distance: 209mm binding thickness: 19mm packing: 150pcs/ctn Features: 1. Simple design, elegant-looking, easy to use. 2. Structural strong, difficult to deform. 3. Reusable and durable, rust-resistant. 4. Never damage paper files. SGS reports offered.