55mm Folding Electric Hub for 50mm Spinner APC Folding Propeller Hub 55mm LPFH5 Two-piece, gray composite propeller hub that goes on each side of the APC folding propeller blades to hold them in place. (blades are not included) The 55mm Folding Propeller Hub can be used with a 50mm spinner or similar. Electric powered aircraft only (not for gas engines). Hub has molded nut insets for easy tightening and includes hardware. Overall Length: 68mm Length between Blade Mounting Centers: 55mm Inner Mounting Diameter: 8mm ID with 30 deg. taper for collets
Use LPAR18SF or LPARM12SF adapter rings for centering on smaller motor shafts (not included)