Contents: 1 piece, material polyethylene, for all types of wheels, with 3 positions and 3 wheel widths: small wheel diameter 100 to 125 mm, max. Width 25 mm, medium wheel diameter 125 to 150 mm, max. Width 28 mm, large Wheel diameter 150 to 200 mm, max. Width 38 mm, can be stacked, combined and mounted in a row (several holders)