Features: Type:Hair Extension Ring Material:Silicone Outside diameter:4.5mm Quantity:500 pcs Description: Made of high quality material, which is safe to put on your hair and without damage to your hair. With very soft silicone lining, which allows you to install them to the head for maximum comfort to the client and undetectable. It holds human hair very tightly after pinched and it will not easily get slide when wearing. A great accessory for hair extension, easy to put on and remove. How to attach and remove: Attach:Pull the hair through the micro ring with a hook needle, and squeeze the ring to attach. Remove:Open the micro ring with a pliers and remove it. Notice: Due to the different monitor and light effect,the actual color maybe a slight different from the picture color. Please allow 2-3cm differs due to manual measurement. Package List: 500 x Hair Extension Rings