Enhance the performance of your sliding doors and windows with the Nylon U Groove Pulley Set. These rollers are crafted from hardwearing nylon, providing excellent wear resistance and longevity. groove design ensures a secure fit , making them ideal for use in systems and other mechanical applications. Easy to install, these pulleys offer a reliable solution for smooth and quiet operation. Features -Color:White -Material:Nylon -Size:2.50X2.50X0.80cm/0.98X0.98X0.31in -sturdy nylon: constructed from strong nylon material, these pulleys offer excellent wear resistance and durability, providing a solution -Wide compatibility: these pulleys are ideal for use in door and window hardware, drawer systems, and various mechanical drives, catering to multiple applications -Efficient bearing guides: featuring many bearing guides, these pulleys ensure smooth and frictionless movement, improving the overall performance of your hardware -Aesthetic appeal: the clean white design of these pulleys blends seamlessly with different interior styles, enhancing the visual appeal of your installations -Userfriendly installation: designed for ease of use, these pulleys are lightweight and easy to install, allowing for quick and convenient replacements Package list: 4 x pulley