Our universal pulleys and rollers are designed to fit a variety of fitness machines, from machines to home gym systems. These components are easy to install and replace, ensuring your equipment remains in top condition. The smooth rolling action helps improve your workout efficiency, allowing for more good training sessions. Features -Color:Black -Material:PP, PA -Size:6.60X6.60X2.00cm/2.59X2.59X0.79in -Effortless movement: the roller wheel design makes it easy to move and store your fitness equipment, providing convenience and flexibility in your workout space -Flexible swivel: with a universal wheel design, these wheels offer smooth and flexible rotation, making them ideal for use with different fitness machines -Sturdy and reliable: constructed from durable plastic, these wheels are built to endure frequent use, ensuring dependable performance for your exercise equipment -Great for fitness fans: these wheels are good for sports enthusiasts, enhancing the ease of use and functionality of your workout gear -Broad compatibility: suitable for a variety of fitness equipment, including stationary bikes and treadmills, these wheels are a versatile addition to your home gym Package list: 4pcs universal roller wheel