Adjustable for tank depths from 4inch to 24inch. Left or right arm adjustable in 90deg increments. Standard SAE 5-hole pattern, rust proof Delrin flange with rigid aluminum insert. 10-24 stud connections for maximum integrity. Stainless steel, aluminum and brass construction. 240 (empty) to 33 (full) ohm resistance range. Includes gasket, screws and instructions. FUEL GUAGE OPTIONAL