Specifications:
Material: Alloy
Color: Silver
Size: Diameter - 6mm / 0.24 inches, Height - 5mm / 0.2 inches, Length of the small screw - 3mm / 0.12 inches

Easy Installation: Simply place a pin keeper behind your lovely pin and tighten it with the tool. The whole process is time-saving and effortless, making it a great tool for pin collectors and enthusiasts.
Locking pin backs securely hold items and tools such as leather, vests, jackets, caps, hats, work uniforms, lanyards, bags, cards, etc. You don't have to worry about pins falling off or getting lost.

Package Includes: 20 pin back locks, matching screws, and one tool.