Leveling Mount Leveling Mount Type Swiveling Stud Base Dia 2 1/2 in Height 5.25 in Load Capacity 1200 lb Thread Size 5/8 In.-11 Construction Stainless Steel Hex 7/8 in Includes Locking Nut Bolt Length 4 in Finish Stainless Steel Base Material Delrin(R) Bolt Material Stainless Steel Base Delrin(R)