Leveling Mount, PolyMount Type, Thread Size 5/8-11, Base Dia 5 In, Load Capacity 10, 000 Lb, Height 3 In, Hex 7/8 In, Construction Steel, Finish Clear Zinc, Includes Jam Nut Boltless Leveling MountsPolyMount Polyglass-fill nylon base is corrosion-resistant. Lag holes allow permanent floor mounting. For washdown applications.