Male-End Leveling Mount, Leveling Mount Type Swiveling Stud, Base Dia. 4 in, Height 7.31 in, Load Capacity 5,000 lb, Thread Size 1/2 In.-13, Construction Steel, Hex 3/4 in, Includes Jam Nut, Connection Type Threaded Stud, Bolt Length 6 in, Base Material Nylon, Swivel Angle 15 Degrees , Base Shape Round, Anti-Vibration No, Series PolyMount, Base Nylon, Socket Material Not Applicable.