Feature: 1. Easy to use, prevent the loss of the glasses chain, move the stainless steel hoop, and the glasses can move safely and comfortably. 2. The adjustable strap end allows you to hold your glasses tightly. Just move the metal ring to adjust the tightness. 3. Made of durable silicone and stainless steel, high-quality materials, superb technology, no need to worry about rust and fading. 4. 40 adjustable silicone anti‑skid rings for glasses to meet different needs and can be used for a long time. 5. Wide range of uses. It is a necessary accessory for DIY enjoyment of jewelry such as sunglasses chains, sports glasses belts, and glasses necklaces. Specification: Item Type: Eyeglass Chain Ends Material: Stainless Steel Silicone Specification: 10 Pcs / Bag Package List: 40 x Eyeglass Chain Ends