uxcell Plastic Swivel Eye Ring Curtain Track Rail Rollers Carrier 50 Pcs Color: White; Total Size: 24 x 14 x 18mm/ 0.94" x 0.55" x 0.71" (L*W*T) Material: Plastic, Metal; Net Weight: 115g Package Content: 50(+/-2%) x Curtain Track Rollers; Product Name: Curtain Track Roller Roller Diameter: 11mm/0.43" Oval Ring Diameter: 6mm/0.24"