1. Smooth and Quiet Gliding The sliding door pulley is equipped with a damping buffer, providing a gentle and noiseless gliding experience. No more loud and jerky movements when opening or closing your sliding door. 2. Durable and Reliable Made from materials, this sliding door wheel is built to last. The thickened steel plate construction offers durability, resisting pressure and deformation over time. 3. Enhanced Spring Mechanism Featuring a dual spring mechanism, this pulley moves elastically up and down, delivering improved rebound force. This ensures smoother and more efficient gliding, along with enhanced longevity. 4. WearResistant Nylon Wheel The nylonmaterial wheel of this sliding door pulley is designed to reduce friction and wear. The backandforth movement of the wheel is facilitated by a wearresistant block, further extending the pulley's lifespan.