Twist the Knurled Knob to lock the receiver into any dolly accessory hole. The Inside hole is a Junior receiver and the outer housing is milled to accept standard 1-1/4" speed rail fittings. Slip your speed wrench or a phillips screwdriver into one of the holes in the knurled knob to aid in tightening the fitting.

Lock-to-Dolly Receiver

$145.00Price