DescriptionDesigned for window curtain, can be used to replace curtain track roller. Made of premium material for long time and durable use. It has a simple design, but very practical in use, giving you a good using experience. Also can be a good gift choice for your friends, they will like it.Features- Color: White -Material:Plastic, alloy - Size: 2.90X0.80X0.80cm/1.14X0.31X0.31inRoller diameter: 8mm Roller gap: 3.6mm Roller middle gap: 10mm Suitable track height: 10-20mm Suitable track bottom width: 9-10mm - Made of high grade plastic and alloy, enough quantity is enough for your daily use. - Perfect for holding curtain panels, room dividers, drapes, sheers, valances, and etc. - Can scroll freely and slide smoothly within the track, increase your space and give you privacy. - Widely used in windows, closets, bedrooms, offices, restaurants, sliding doors, etc. - Simple in structure, easy to use, not easy to deform, you can use it with confidence.