Features: 1) Plastic ring 2) Material: PC, POM, PP 3) Outer dia.: 13mm, 15mm, 20mm, 22.5mm, 38.5mm Features:1) Plastic curtain rings2) Material: PC, POM,PP3) Outer dia.: 13mm, 15mm, 20mm, 22.5mm, 38.5mmorigin: China Plastic Rings for Curtain accessories