uxcell 2pcs RC Plane Parts 2 Vane Prop RC Propeller Cap 57mm 2.25" Black Product Name : RC Propeller Cap;Fit for : 2 Vane RC Plane Bottom Outer Dia : 57mm/2.25";Height : 58mm/2.3" Core for Shaft : 8mm/0.31";Material : Plastic Color : Black;Net Weight : 57g Package Content : 2 x RC Propeller Cap8 x Adapter Ring4 x Screw