Smooth Slide with Rail Wheel: Silent Sliding Door Hanging Pulley - Load-bearing double-layer aluminum alloy wheel - Aluminum alloy wheel with good bearing - The hanging wheel slides easily in the track. Built-in wheels: Stainless steel sliding door hanger pulley in this wheel body is built-in, and the normal temperature range is used for a long time, and at the same time it has oxidation resistance. Limit Anti-Collision: This rubber door blocking limiter has the limit of movement of the pulley to prevent the door from colliding on the side.Adjustable Screw: The door hanger pulley can adjust the distance between the door and the door hanger bar by adjusting the screw. The removable L-shaped insert design is convenient and quick, and improves installation efficiency.Inner and outer plates: 8 hanging wheels damped closing, quiet to hang wooden movable sliding door is the anti-corrosion performance of iron plated layer effectively.Product Features: 1. This pulley roller is smooth and smooth, does not stick, and has good noiseless effect. You can use it for any type of sliding door. 2. This pulley is made of aluminum alloy, auxiliary wheels, ball bearings, balance system. It gives softness to the sliding door. 3. This pulley is easy to clean and maintain. You dont need to oil.