Propeller, Replacement, Propeller Dia. (In.) 20 in, Bore Dia. (In.) 5/8 in, Number of Blades 4, Pitch (Deg.) 24 Degrees , Blade Material Spark Resistant Cast Aluminum, Keyway (In.) 3/16 in W and 3/32 in D, Number of Set Screws 2, Rotation CW Facing...