Kunststoffspinner weiß 57 mm Graupner 1112.57 Tough, high impact spinners for right-hand rotation two-bladed propellers. The spinner backplate is fitted between the propeller driver and the propeller. The backplate features an annular channel into which the spinner cap engages securely. The cap is fixed to the backplate by means of two self-tapping screws (70 mm diameter and larger:four screws)