Material: Our hair extensions beads have 2 layer，aluminium outside layer and silicone inside layer
Size: 5.0x3.0x3.0mm (outer dia. x inner dia. x length)
Item name and used: Silicone Lined Micro Links Rings Beads, After clamping with non-slip silicone lining beads, it can holds human hair and prevent it from slipping off easily used for Hair Feather Extensions
