The Aeronaut Z spinners combine the advantages of the CN spinners (Cool Nose with cooling air openings) and the cranked Z centre pieces. Due to the angled aluminium centre pieces, the folding propeller blades lie even closer to the fuselage and thus ensure less drag during gliding. The spinners with the centre pieces are designed for slim electric glider hulls, but can also be advantageous for wooden hulls in box construction, for example, if they are ground round.