10 pulleys in one set. Made of iron and plastic, with ball bearings inside for smooth operation and durability. Suitable for wardrobe, bookcase, glass cabinet, and other office furniture. Wheel diameter is 19mm; please check your furniture size to ensure compatibility before purchasing. Each product has a unique manufacturing part number on the label inside the package, including part number, model number, and inspection date for quality verification. If you have any questions, please provide the part number for assistance. Features: - 10 pulleys per set - Constructed from iron and plastic with internal ball bearings for smooth and durable performance - Ideal for use on wardrobes, bookshelves, glass cabinets, and other office furniture - Wheel diameter: 19mm; verify dimensions before purchase Specifications: - Material: Iron and Plastic - Color: Silver and White - Size: 6.5 x 1.9cm (L x Dia) - Weight: 250g Package Content: 10 x Pulley Blocks Note: Measurements are taken manually; please allow 1-3cm size variation. Due to differences in lighting and display screens, slight color variations may occur. Actual product received may vary slightly in appearance.