Plastic wheels are free rolling and slide smoothly within the track. The material has strong environmental adaptability, they are suitable for using in humid places. for for holding curtain panels, room dividers, drapes, sheers, and valances. Widely used in windows, closets, bedrooms, office, restaurants, sliding doors, etc. Features - Color: White. - Material: Stainless steel. - Size: 3.80 x 1.50 x 1.30cm/ 1.49 x 0.59 x 0.51 inch. - The white pulley hook can be suitable for curtains of various colors, suitable for curtain tracks. - When you open the curtain, it has a powerful noise-cancellation function. - And all the curtain rails can roll freely and slide smoothly in the rails. - Suitable for fixing curtain panels, room dividers, curtains, gauze and hanging fabrics. - Widely used in windows, closets, bedrooms, offices, restaurants, sliding doors, etc. Package list: 60 x curtain track rollers