2192000051 The (New - no drill design) BTI OSL Sign Back Rack Mounting Brackets are used to mount the Oversize Load Sign to a Pickup Truck Back Rack. Comes with pivot bolts for the OSL Sign, 3/8 inch clevis pins with 6 inch lanyard. See photo gallery for mounted pictures of Back Rack Mounts. Kit includes left hand and right hand pivot brackets and weighs 11 lbs. Learn More about Back Rack