Pair 7 x 3 inch 178mmx76mm Foldable Propeller Blades for RC Glider Product Name : Folding Propeller Vanes;Model : 7 x 3inch Motor Shaft Hole Dia : 3.17mm/ 0.12";Rotating Diameter : 178mm / 7" Pitch : 76mm / 3";Hub Thickness : 8mm / 0.31" Material : Plastic;Color : Black Weight : 8g;Package Content : Pairx Folding Propeller Vanes