Material Excellence: Crafted from alloy, these V Groove Wheel Sliding Door Pulleys are built to withstand heavy use and harsh conditions, ensuring a long-lasting performance for your sliding gate or door systems. Smooth Operation: Each wheel features a -engineered V-groove design that fits perfectly with inverted tracks, facilitating a smoother and more stable sliding motion for gates and doors, reducing noise and friction. Heavy-Duty Support: Designed to handle substantial loads, these rigid casters support heavy gates and doors, making them ideal for industrial and residential applications where reliability is key. Easy Installation: The straightforward design allows for quick and hassle-free installation, making it easy to upgrade or replace existing rollers without the need for professional help. Versatile Use: Not only perfect for sliding gates, but these rollers can also be used for a variety of applications including barn doors, industrial machines, and warehouse shuttles, enhancing their functionality and efficiency. Color: As shown Material: Alloy Package Contents: 4 * Sliding Door Pulley Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.