uxcell Plastic Curtain Glider Track Rollers 13mm Dia Wheel 50pcs Green White Color: White, Green; Total Size: 34 x 20 x 13mm/1.3" x 0.8" x 0.5"(L*W*H) Material: Plastic; Net Weight: 96g Package Content: 50(+/-2%) x Curtain Track Rollers; Product Name: Curtain Track Roller Roller Diameter: 13mm/0.5" Hole Diameter: 6mm/0.24"