uxcell 127mm 7 Vanes Ducted Fan Vane for RC Aircraft 8.5mm Dia Motor Shaft Product Name : 7 VanesDucted Fan Vane;Rotor Diameter : 5"(127mm) Fit Motor Shaft Diameter : 8.5mm/ 0.33";Hub Diameter : 51mm/ 2" Total Height : 73mm/ 2.9";Material : Plastic Color : Black;Weight : 97g Package Content : 1 x 7 VanesDucted Fan Vane