Designed for versatility, this pulley is suitable for sliding glass doors, wardrobe doors, and patio windows. The dual copper wheels offer excellent stability and smooth movement along tracks, reducing noise and friction. Its compact design seamlessly integrates into various door and window systems, enhancing functionality and ease of use. Features -Color:Silver -Material:Stainless steel, brass -Size:7.80X4.00X1.35cm/3.07X1.57X0.53in -Size:2.70X0.70X0.70cm/1.06X0.28X0.28in -Inner Diameter: 22 mm -Inner groove width：5.2 mm -Sturdy stainless steel construction: crafted from sturdy stainless steel, these pulleys offer exceptional durability and longevity, suitable for hightraffic areas in homes and businesses -Noise-reducing copper wheels: the dual copper wheel design minimizes noise and ensures smooth operation, improving the comfort of your living space and making them suitable for retrofitting old sliding windows -Easy installation on various tracks: these pulleys are compatible with multiple track types, allowing for easy installation on glass sliding doors and enhancing door stability and user experience -Practical load-bearing capacity: designed to handle heavy loads, these pulleys ensure smooth and stable movement of heavy window or door panels, solving the problem of inadequate load capacity in traditional pulleys -Fine wear and climate resistance: with excellent wear and climate resistance, these pulleys maintain their performance in various weather conditions, reducing the need for frequent maintenance Package list: 2 and window pulley