trigger open 2 ring stationery clip/clip file 2 ring binder item code: TR298-2-16/20 material: iron color: nickel length: 307mm width: 20mm inner diameter: 16mm outer diameter: 21mm height: 21mm ring distance: 80mm binding thickness: 11mm packing: 300pcs/ctn Material: metal Color: nickel/black Length available: 89/123/133/153/210MM Width available: 15/17/20/26/36MM Inner diameter available:15/16/17/19/20/23/25/30/32/35/38/40/45/50/65/78MM Shape of ring: R/D/Q Features: 1. Easily attached and detached, harm-free from paper files 2. Simple design, elegant looking. 3. Stable structure. Not easy to scratch or dent. 4. Durable, rust-resistant. 5. High quality, competitively low price, fast delivery. 6. Small orders accepted. 7. OEM service available. 8. Most of our products can be customized according to different needs!