Spinner centre pieces for 2-blade folding propellers. These centre pieces are used with 2-blade folding propeller setups and act as the hub to which the folding propeller blades are attached. Each unit has an 8mm bore and an 8mm gap for the blade root, along with a 3mm fixing screw bore size. Fixing screws and nyloc nuts are included.
Please note that Graupner precision spinners already include a centre piece but Aeronaut precision spinners do not (apart from the 30mm cool nose spinners)
