Complete rear wheel for racing. This wheel has the dimensions: 45mm width and 76mm diameter. Comes in one speed only. Fits: - Swenor Fiberglass (Eventhough if this rollerski model is made with 70 x 45mm wheels - there is space at the fork for this bigger racing wheel) - Swenor Alutech Racing - Alutech (Eventhough if this rollerski model is made with 70 x 45mm wheels - there is space at the fork for this bigger racing wheel)