uxcell 2Pcs RC Plane 6" Pitch 9x6E 2 Vane Props Propellers w Ring Adapter Product Name : RC Airplane Propeller;Vane Number : 2;Model : 9x6E Motor Shaft Hole Dia : 6mm / 0.24";Total Length(Rotating Diameter) : 229mm / 9";Pitch : 152mm / 6" Max Thickness : 11mm / 0.43";Shaft Size Adapter Ring Inner Dia : the Biggest:8mm/0.32"the Smallest:2.5mm/0.1" Material : Plastic;Color : Gray Net Weight : 41g;Package Content : 2 x Propeller12 x Shaft Size Adapter Rings(6 for each)