Specification: [Type]:Heat Protector Shields With Scale Mark [Material]:PVC [Color]:Clear [Diameter]:approx5.5cm [Weight]:approx47g Feature: Protector Disks make Nail Tip Hair Extensions easier to install. They're reusable and come in a pack of 50. Using New hair extension accessories guarantees that both hair and the hair extensions are treated properly and last a long time. Our products are designed to work with New hair and bonds; we recommend only using our products for the best results. Using: 1.Use New Queen protector disks while installing Nail Tip Hair Extensions to keep surrounding hair clean and protected. 2.Simply clip the disk to hair, right at the part line where the extensions are going to be installed. 3.Pull a strand of hair through that matches the size and weight of the extension weft. Bond the keratin as directed, and the disk will protect and steady hair. 4.When the bond is finished, slide the hair out through the slit. Package: 50pcs Heat Protector Shields