Crafted from sturdy stainless steel, this sliding door and window pulley features a classic design with dual copper wheels. Its smooth rolling mechanism ensures effortless operation, making it ideal for old-style sliding windows and glass doors. The sturdy construction enhances longevity, providing reliable performance for home or office 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: made from sturdy stainless steel, these pulleys are built to last, ensuring longterm durability and reliability for frequent use in both residential and commercial settings -Dual copper wheels: featuring dual copper wheels, these pulleys reduce noise and provide smooth sliding, enhancing living comfort and making them ideal for upgrading old sliding windows -Versatile track compatibility: designed to fit various tracks, these pulleys can be easily installed on glass sliding doors, improving door stability and enhancing the opening and closing experience -High load capacity: with a strong load-bearing capacity, these pulleys support heavy window or door panels, addressing issue of insufficient load capacity in traditional pulleys -Excellent wear and weather resistance: these pulleys offer great wear and weather resistance, adapting to different climate conditions and maintaining stable performance over time, reducing maintenance frequency Package list: 2 and window pulley