Description: High-quality materials: The adjustable glass chain ends are made of durable silicone and iron. The customized long tip combines high-quality stainless steel material with exquisite craftsmanship, so you don't have to worry about rust and fading. Easy to adjust: adjustable design, the silicone ring can be fixed with a spring, suitable for glasses of any size. Move the stainless steel bracket, push up means to lock, sliding down means to unlock. Necessary parts to ensure the safety of your glasses when moving and provide a more comfortable experience Wide range of uses: For any handicraft that requires end rings and fixing hoops, it is an indispensable accessory for DIY jewelry such as sunglasses chains, sports glasses belts, and glasses necklaces. Size: The silicone frame is about 23 mm long, 7 mm wide, and the long spring is about 8 mm long. It is suitable for most eyeglass chains in general size. Other uses: It is very suitable for any process project that requires a final cycle. Specification: Material: Silicone, iron Dimensions: 2.3 x 0.7 cm Package includes: 50 Note: Due to manual measurement, please allow a slight difference. The color may be slightly different due to different monitors. Thanks