1. Heavy-duty construction: The Workbench Caster set is built entirely of steel construction, ensuring long-lasting durability and strength to effectively support your heavy workbench. 2. Retractable design: These casters feature a retractable wheel design, so you can easily move the workbench when needed and lock it in place when not in use, providing both flexibility and stability. 3. Smooth mobility: With 2.5-inch wheels designed for easy maneuverability, the workbench casters improve the efficiency of your workspace by allowing you to position your workbench effortlessly. 4. Versatile applications: Ideal for a variety of settings, the Workbench Caster set is perfect for workshops, garages, or home projects, making it a must-have accessory for anyone who needs a mobile workbench solution. 5. Easy Installation: The Workbench Caster Kit comes with all the necessary hardware for quick and easy installation, transforming your stationary desk into a functional mobile workstation in no time. Color: Black Material: Metal Package Contents: 4 x Desk Caster Set Only the above package contents, other items are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.