The high speed capabilities of these pulley bearings make them suitable for applications that require rapid movement and precision. Their smooth operation ensures that they can handle high rotational speeds without compromising on performance, making them ideal for use in machinery. Features -Color:Assorted Color -Material:Steel -Size:1.00X1.00X0.40cm/0.39X0.39X0.16in -Smooth performance: designed for high speed, stable, and quiet operation -Reliable engineering: ideal for various precision machinery, providing consistent and reliable support -durable steel: made from durable steel, ensuring long term stability and functionality -Friction minimization: precision engineering reduces friction and wear, extending the bearing's lifespan, suitable for high load scenarios -Convenient installation: easy to install, making it for quick replacements and repairs in various pulley systems Package list: 10pcs pulley bearings