High Quality: The strap ring is made of high-quality silicone with good elasticity, the customized short spring combines high-quality stainless steel material and exquisite technology, no need to worry about rusting and fading. Wide range of uses: Suitable for any crafts that require end rings and fixed hoops, it is an essential accessory for jewelry DIY enjoyment, such as reading glasses, sunglasses chains, sports glasses straps, glasses necklaces, men's necklaces or women's necklaces, chain bracelets, etc. Welcome Learn more about how to use it and share your DIY achievements with us Adjustable and anti-slip: The wearer can move the metal coil to adjust the glasses, which can help you adjust the grip of the glasses, and you can adjust the metal coils on both ends to fit your glasses legs. Move the metal ring, sliding up means locking and sliding means unlocking. The rubber ring will stabilize the chain on the glasses and provide an anti-slip effect. Packing quantity: Comes with 60 glasses chain ends, 15 colors: watermelon red, purple, yellow, sky blue, dark blue, mint, lake blue, light pink, transparent, pink, black, rose, green, white , red, each color comes with 2 chain ends, which means there are 30 pairs of different color combinations, different colors are enough to meet your needs. Plenty of glasses chain ends for you will use one by one for a long time Dimensions: Silicone hoop is approx 20mm long, 5mm wide, short spring is approx 5mm long, universal size fits most eyeglass chains Colour:As Shown Material:Silica gel Package Contents: 60 * Glasses Chain Ends Glasses Chain Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.