Feathering Shaft H60159T for RC helicopter Align T-Rex 600. Included:Main shaft (Ø10x201x29.3mm) - 2 psc,Lock collar (Ø10xØ16x6mm),M4 set screw (M4x4mm) - 2 psc,Socket collar screw (M3x22mm) - 2 psc,M3 nut - 2 psc.