Bluemoona 200 Pcs - Metal Spring Hooks 1/2" 12mm Purse Pulis Snap Clip for Lanyard Zipper Pull Length:1/2" 12mm Thick:0.04" 1mm Diameter of large curve = 0.19"(5mm),Diameter of small curve = 0.15"(4mm) Quantity:200 Pcs Color: Nickel Use For Purse, Lanyard, Zipper Pull, ID Card, Key Chain, KeyRings and so on