Double Hook Roller Ball Curtain Rings Heavy duty rings. Corrosion free. Solid brass construction. Rolls friction-free across your shower curtain rod. Available in ... 12 rings for a standard 60" or 72" curtain, 24 rings for a 108" curtain, or 36 rings for a 168" or ... 180" curtain. Available in finishes of chrom, polish nickle, rubbed nickle, rubbed ...