Leveling Mount Leveling Mount Type Swiveling Stud Base Dia 2 1/2 in Height 3.38 in Load Capacity 1200 lb Thread Size 5/8 In.-11 Construction Stainless Steel Hex 7/8 in Includes Locking Nut Bolt Length 2 in Finish Stainless Steel Base Material Delrin(R) Thrust Pad Material Non-Skid Pad Bolt Material Stainless Steel Base Delrin(R) w/ Non-Skid Pad