Our Heavy-Duty Retractable Casters are a game - changer for transforming stationary workbenches into mobile units. Constructed with reinforced steel, high - quality bearings, and durable screws, these sets of four casters are built to last. They come with three mounting holes on both the top and bottom plates, and each pack can support a total capacity of up to 660 lbs. Installation is a breeze thanks to the specially designed template that comes with all the necessary hardware, eliminating the need for measuring tools. The dual - bearing design enables 360 - degree smooth rotation, allowing you to effortlessly maneuver in tight spaces and expand your workspace. The 2.5 - inch polyurethane caster wheels are slip - resistant, long - lasting, and suitable for various floor types, protecting your floors from scratches and damage. Additionally, the textured foot pedal provides a secure grip. By stepping on the middle of the pedal, you can elevate your workbench, work table, or lightweight machine with flat bases off the floor at a fixed height for easy movement, and lifting up the pedal returns it to its original working height.