uxcell 2pcs RC Plane Aircraft DIY Parts Prop Propeller 38mm 1.5" Black Product Name : RC Propeller Cap;Fit for : 2 Vane RC Plane Bottom Outer Dia : 38mm/1.5";Height : 45mm/1.8" Core for Shaft : 8mm/0.31";Material : Plastic Color : Black;Net Weight : 22g Package Content : 2 x RC Propeller Cap8 x Adapter Ring4 X Screw