Battery Hold Downs, Sets & Trays Adjustable Mount Crossbar 84-9480,L and "J" style bend eliminates any need to shift or remove battery,Also fits group 1, 2, 17, 22, 23, 42, 54, 55, 56, 72, & 74 batteries ( 84-9481),Car, truck, bus, off-road, marine and recreational vehicle applications,Drain slots prevent fluid accumilation,Fiberglass-reinforced polypropylene is rust and corrosion-proof,Ideal replacement for OEM-style trays,Long thread accommodates all crossbar/frame designs including QuickHold® products,New telescoping design