Upgrade your sliding systems with the Nylon U Groove Pulley Set. These white bearing guide rollers are designed to provide smooth and quiet operation for doors, windows, and drawers. The hardwearing nylon construction ensures durability and performance. groove design allows for easy installation and a secure fit , making these pulleys an for various hardware applications. Features -Color:White -Material:Nylon -Size:2.50X2.50X0.80cm/0.98X0.98X0.31in -strong nylon material: these u groove pulleys are made from sturdy nylon, offering excellent durability and wear resistance for longterm use -Versatile applications: suitable for door and window hardware, drawer systems, and various mechanical drives, these pulleys meet a wide range of application needs -Smooth and efficient: equipped with sufficient bearing guides, these pulleys ensure smooth and efficient sliding, reducing friction and enhancing performance - design: the simple and design of these pulleys complements various decor styles, adding of sophistication to your hardware -Easy to install: lightweight and portable, these pulleys are easy to install and can be quickly replaced, making them convenient for both diy enthusiasts and professionals Package list: 4 x pulley