Curtain Rods , spring tension pole , spring tension rod , shower curtain pole , curtain rod Curtain Rods :1. Diameter: 16mm/ 19mm/ 22mm/ 25mm/28mm/30mm/35mm2. Material: ... finial , expandable curtain rods , adjustable rod set , holdback , pair , clip ring , umbra holdback , satin nickel finials, shiny nickel , spring tension pole , spring tension rod , shower ...