Specification: Dimensions：Approx. L 440 x W 200 H 40mm Type: Ramps & Chocks Tyre Saver prevents flat spots and is suitable tyre diameters 10"(25.4cm) - 20"(50.8cm) Nett Weight: 2.28 kg Capacity: 5 T Features: Tyre saving blocks help prevent flat spots or damage to car, caravan or motorhome tyres whilst they are stationary for prolonged periods of time, such as over winter. Maximum weight capacity 5tonne per pair. Saves installing winter storage wheels. Increased stability, as wheels cannot easily be moved in either direction without deliberate intent to do so. Pacakage Include: 4 x tire savers