Amarine-made Polished Stainless Heavy Duty Oval Boat Marine Grab Handle Hand Rail with Flange & Stud Made of Polished steel Rail Dimensions: 1" x 3/4" Stud Dimensions: 5/16" * 2" Overall Dimensions: 13" W x 4" H (above deck) Mounts: (2) 5/16" threaded bolts with 12" apart center on center Easy to mount anywhere there is access to a thru-bolt, Made with 2" X 5/16" studs, and mounts Flush with hardware included.