MATERIAL: Made of sound metal, not easy to rust and has strong tension. The surface is plated golden and polished without any rough edges. ADVANTAGE: The curtain ring can be opened and closed, it has great locking mechanism and construction, it won't break easily and open up by themselves after using a long time. Installment: Hang the curtain rings one by one on the curtain rod, then you can put a hook or clamp on the small ring, and finally put the curtain on, you can slide the curtain…