3 modes:
a) rear wheels drive (4X4)
b) rear wheels locked (will not spin)
c) rear wheels free spin (4X2)
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Steel Hex coupling with nitride coating
one dig unit with mounting hardware
Bronze linear bearings and Rubber cushioning linkage give smooth synthesized shift action

Axial Wraith complete gearbox with gear and screw.
One standard servo and servo arm
Three or more channel radio system