These RV Vent parts are useful with your roof vent repairs. The RV vent parts featured here are a crank operator assembly and a replacement 12V fan blade. These replacement fan blades fit any vent motor with a 1/8" "D" shaft (shaft has one flat side). Blades may be for clockwise rotation or counter-clockwise rotation. Rotation is determined by looking down past the motor to the top of the fan blade. We offer the best so you worry less with higher quality and better performance that outlast all other brands. We carry all the accessories and hardware needed to make installation easier and more productive.