The Impact 450kg steel vehicle dollies support up to 900kg per pair and provides a contoured surface, reducing the risk of your tyres developing flat or hard spots when parked up for extended storage periods. These heavy duty, solid steel constructed dollies feature 4 x 90mm swivel castors with 360 degree rotation, allowing you to easily manoeuvre your vehicle into a position that would be impossible to drive into. They are a great addition to your garage or workshop if you plan to have vehicles sitting for extended periods of time or when you're a bit tight for space.