MJX F45 Optimizing Version Main Shaft Head Aluminium Alloy Remote Control Toys Parts Note: Color randomly sent. . Description: Item name: main shaft head . Usage: for MJX F45 rc helicopter . Feature: Main shaft head around two waist ring of the original embedded aluminium alloy protection circle, greatly improve the service life of main shaft head. . Aluminum alloy guard ring by grind oxidation treatment , coloring for red green black three kinds of color . . Aluminum alloy protection circle and original main shaft head close fit, with high quality epoxy resin glued a whole one. . Package Included: 1 x main shaft head .