Leveling Mount Leveling Mount Type Swiveling Stud Base Dia 2 1/2 in Height 3.38 in Load Capacity 4500 lb Thread Size M16 Construction Steel Hex 7/8 in Includes Locking Nut Bolt Length 2 in Finish Yellow Zinc-Plated Base Material Steel Thrust Pad Material Non-Skid Pad Base Steel w/ Non-Skid Pad