uxcell Plastic Curtain Track Carrier Slide Roller 10mm Dia 40 Pcs White Color: White,Silver Tone; Total Size: 10 x 16mm/0.4" x 0.63"(Max.D*H) Material: Plastic; Net Weight: 33g Package Content: 40 x Curtain Track Rollers; Product Name: Curtain Track Roller Oval Ring Size: 11 x 9mm/0.43" x 0.35"(L*W) Top Round Diameter: 10mm/0.4"