MetalTech 6.25 in. x 5.5 in. x 5.25 in. Galvanized Steel Spring Clip/Lock for Coupling Pin on Mason and Walk-Through Scaffolding M-MLS - The Home Depot
Button mit Kroko-Clip Verschluss 50mm - Badgematic Button GmbH
Karteo Clip for ID Holders [Pack of 1] Clips with Metal Press Button Fabric Reinforced for Card Sleeves ID Card Holder : Amazon.de: Stationery & Office Supplies