Quality is the first with best service.Customers all are our friends.   Application: Silicone-lined Micro Links Rings for Hair Extension (No silding from human hair, a great helper for Hair Extension Installation.) 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. Material : Wooden  Bead size : 5mm (outside), 3mm (inside) Specifications: 100% Good Condition ! Quality is the first with best service.Customers all are our friends. Package Included: 500pcs /bag Silicone Micro Ring Notes: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. *please allow 1-3 CM differs due to manual measurement.