Style: Aluminum micro ring with screw. 1. Available size: 3.5, 4.0, 4.5mm and so on 2. Available colors: black, blonde, brown, dark brown and light brown. Available styles of micro ring and copper ring: Micro ring without screw. Micro ring with screw. Micro ring with silicone. Copper bell ring. Copper ring without bell. Copper ring with silicone. Many more different colors and sizes can be available.
