New Outdoor First-Aid Parts/XL HS1185Instruction:Use for T-REX450X/XLSpecification:Main rotor holder x 2Feathering shaft x 2(3x40mm)SF mixing lever x 2Tail unit housing(R) x 1Tail unit housing(L) x 1Tail drive pulley(11T) x 1Tail drive gear cover x 1Tail rotor shaft x 2Stainless steel tail rotor hub x 1New tail rotor housing(Black)-Dual bearing x 2Stainless steel linkage ball x 2(4.75x4.59mm)Cross screw x 2(M2x6.5)Bearing(MR52ZZ) x 6(2x5x2.5mm)Bearing(MR63ZZ) x 2(3x6x1.5mm)Washer x 4(2x3.8x0.2mm)Washer x 2(2x3.8x0.5mm)Aluminum collar x 2(3x5x1.5mm)