Abstract: A demountable carrier for attachment to the tongue of a vehicle trailer hitch. The carrier includes a hollow socket member for attachment to the tongue, with the axis of the bore of the socket member generally parallel to the ground and perpendicular to the long axis of the tongue of the hitch. An L-shaped plug member has one leg thereof dimensioned to be closely received in the bore of the socket member, and aligned apertures in both the socket member and the plug member are receptive of a releasable pin to retain the leg of the plug member in the bore. The second leg is provided with a support at its free end to attach a carrier unit. The cross-sections of the plug member and the bore of the socket member are selected whereby the plug member can be moved from a deployed position to extend behind the vehicle, or a stored position above the trailer hitch. The plug member also permits transfer to another vehicle having a complimentary socket member.