Damping Buffer The sliding door pulley includes a damping buffer to smooth and quiet operation. It reduces noise for a calmer environment. Materials Made of materials for durability and longlasting performance. You can rely on its quality over time. Strong and Sturdy Construction Thickened steel plate construction provides load strength and deformation resistance. Built to withstand heavyduty sliding doors with reliable longevity. Elastic Movement The pulley moves up and down elastically thanks to the spring mechanism. The double spring rebound force enhances performance and delivers smoother sliding motion. AntiWear Design The nylon wheel reduces friction and wear. An antiwear block ensures smooth backandforth movement and a longer lifespan. Specifications Product name: Pulleys Material: Steel, nylon Color: As shown in the picture Size: 84 x 78 mm Use scenarios Residential interior doors such as wardrobes, sliding room dividers, and other trackbased doors that benefit from quiet, smooth operation. Commercial spaces with heavyduty sliding doors, including offices, shops, and storage areas that require reliable performance. Industrial or workshop environments where durable hardware and smooth motion are important for frequent door use.