Metal Spring Hooks 3/4" 20mm Purse Pulis Snap Clip For Lanyard Zipper Pull ID Card Key Chain Findings (Nickel) Length:3/4" 20mm Diameter of large curve = 0.27"(7mm),Diameter of small curve = 0.2"(5.2mm) Quantity:200 Pcs Color: Nickel Use For Purse, Lanyard, Zipper Pull, ID Card, Key Chain, KeyRings and so on