... more tighten. Micro Ring with silicon * Professional hair ring for hair piece * Material: Aluminium or copper * Type: flat ring and ring with screw * Color: ... 1#,3#,5#,6#,7#,8#,9#,10#,11#,12#,13#,14#,15# Packing: 100pcs/bottle, ... 1440bottles/ctn Micro ring with ...