/br/br2500pcs, available in 5 colors, you have more selection,very practical. It holds human hair very tightly after pinched and it will not easily get slide when wearing. With very soft silicone lining, which allows you to install them to the head for maximum comfort to the client and undetectable. Made of high quality material, which is safe to put on your hair and without damage to your hair. Application: Silicone-lined Micro Links Rings for Hair Extension (No silding from human hair, a great helper for Hair Extension Installation.)./br/brGTIN: 764823500498. Best Sellers Rank: See Top 100 in Beauty & Personal Care. Material Feature: Natural. Hair Type: Straight. Material: Silicone, Aluminum. Color: Multi-colored. Brand: GOTDYA. : B07NS4BF6J. Manufacturer: GOTDYA. UPC: 764823500498. Item model number: fdklk-060. Product Dimensions: 0.2 x 0.2 x 0.12 inches 9.14 Ounces.