Overview Material : Rubber Color : Black Brand : LUSTRIB Number of Pieces : 1 Manufacturer : LUSTRIB About this item Package List: 200 pcs black rubber pin backings—a sufficient quantity to meet your daily needs. Ideal Size: With a 0.43in (11mm) diameter and 0.28in (7mm) height, our PVC rubber pin backs are compatible with pins 0.39-0.47in (1-1.2mm) thick, making insertion quick and effortless. Reliable Enough: Made of durable and comfortable PVC rubber, these pin backs are designed to hold pins securely in place, strong, durable and reusable. Comfort and Fabric Protection: Crafted from high-quality PVC rubber, they are soft, smooth, and skin-friendly. Gentle on clothing, they resist rust and prevent stains. Wide Application: Perfect for securing lapel pins, pin badges, tie tacks, flag pins, enamel badges, and DIY jewelry. Suitable for hats, jackets, bags, reflective vests, and uniforms.