This product is hair extension ring, a great accessory for hair extension. It is made of material, which is safe to your hair and environmental friendly. It allows you to install them to the head for maximum comfort to the client and undetectable. human hair very tightly after pinched and it will not easily get slide when wearing. Features - Colour: Assorted Color. - Material: Aluminum. - Size: About 4x1.2x1.2cm. - Package Size: About 20x15x2cm. - Made of material, which is safe to put on your hair and without damage to your hair. - It allows you to install them to the head for maximum comfort to the client and undetectable. - 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. - Warm Tip: Dear buyer, Due to lighting effect,monitor’s brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: hair extensions ring