APC two-piece, gray composite propeller hub that goes on each side of the folding propeller blades to hold them in place (blades are not included) Hub has molded nut insets for easy tightening. Comes in a bag attached to a header card.
Package includes: One composite propeller hub
Two 3x10mm cap head screws
Two 3mm nuts
Two 3mm washers
See propeller blades for assembly instructions. Sailplanes have no landing gear, and therefore would break a rigid propeller when the plane came in for a landing. The folding propeller folds back upon landing. The use of this hub will shorten the overall diameter of the prop by 10mm from the manufacturer's length listing."