cross section of the interior of the receiver 30 the tongue 36 may thus easily slide into and out of the interior of the receiver 30 by motion along arrow 34 a 34 a constant diameter bore hole 34 is placed through walls of the receiver 30 and the tongue 36 a receiver locking pin 32 is sized to fit within the receiver locking hole 34 securing the tongue 36 from movement relative to the receiver 30 once in place for operation the tongue 36 enters the housing 40 on a forward wall 42 thereof the housing 40 is fixedly attached to the tongue 36 the housing 40 is preferably a rigid partially enclosed six sided box having the forward wall 42 a bottom wall 45 a rearward wall 44 a top wall 43 and two opposite side walls 46 the lever 62 resides along the rearward wall 44 of the housing 40 the lever 62 is a rigid elongate construct similar in length to the height of the housing 40 the lever 62 has a spherical tow ball 60 fixedly attached to its upper end and extending out of the top of the housing 40 through an opening in the top wall 43 in a lower rearward corner of the side wall 46 is formed a pivot hole 65 the pivot hole 65 also penetrates a lower end of the lever 62 a pivot pin 64 passes through the pivot hole 65 and entirely through the lever 62 and both side walls 46 thus the lever 62 is free to rotate about the pivot pin 64 along a path represented by arrow 34 b 34 a tow bar 90 has a socket 80 which fits over the tow ball 60 the tow bar 90 is attachable to a.