Designed to cover wheel faces when horizontally stacked on a Wheel & Tyre Trolley or vertically on a Wheel & Tyre Dolly, the B-G Racing Wheel Protector Foam Discs are a simple but effective means of protecting the rim. The thick foam pads are available in either 500mm or 600mm diameters, the Wheel Protector Foam Discs have a central hole for keeping them in position when used with the central pole on the B-G Racing Wheel & Tyre Dolly. Sold in a set of 4 discs.