Product Name : Curtain Track Rollers;Material : PlasticColor : White;Overall Size : 32 x 15 x 14mm/ 1.3"" x 0.6"" x 0.55"" (L*W*T)Roller Diameter : 12mm/ 0.5"";Hole Diameter : 6mm/ 0.24""Weight : 72gPackage Content : 40 x Curtain Track RollersThese rollers are made of plastic in white, you will never worry about blemishing your beautiful curtain.