This heavy duty plastic tipping trailer is strong and tough, suitable for all Rolly Mini Trac Tractors. It simply attaches on to the tow hitch on the child's tractor with a small coupling pin. Wheels are similar to the rest of the mini tractors from Rolly Toys as they are strengthened with a resin band to help reduce noise and also protects the wheel from wear and tear.. Size in cm: 34.0 x 25.0 x 30.0