Metal loose leaf binder ring
Iron, nickel plated (other colors on request). Sizes ~15–80 mm inside diameter. 1,000 pcs pack @ $0.02/pc. Wholesale packs (same published unit): 1,000 @ $0.02/pc ($20) · 5,000 @ $0.02/pc ($100) · 10,000 @ $0.02/pc ($200).