Material: Made of galvanized iron, these sliding door pulleys are designed to be sturdy and durable for long-term use, ensuring smooth operation for your sliding doors. Product Dimensions: Each wheel in the set has a total length of 90mm and a width of 38mm, making them a suitable size for most standard sliding doors. Easy Installation: These wheels are easy to install on existing sliding doors. The cupboard pulley operates smoothly and quietly, providing stable performance over time. Application: Suitable for furniture hardware accessories, sliding doors, glass sliding doors, cupboards, and cabinets. Versatile Use: This set of sliding door pulley is suitable for various types of sliding doors and cabinet doors, making it a versatile addition to your home or office. Specification: Material: Galvanized Iron Size: 9cm x 3.8cm (3.54 inch x 1.50 inch) Package Includes: 4 Set Sliding Door Pulley Note: Please allow slight measurement deviations of 1-2cm due to manual measurement.