912H adaptation spacer, thickness 50mm. Used with Rotax training pawns (diam 13 mm). Adaptation spacers are available in 2 size (30 and 50mm), allow shifting the hub according to the propeller shaft for the engine cover passage or accessories (cone and platinum) and avoid shearing screws by 13 mm pawns engine side (on a new version 101.6mm diam center distance) and 10mm diam hub side. M8 fixation screws geometry is adapted to locate the shearing on the smooth body and not on the threaded one. Weight: 1135g
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