This folding push pole holder has a stamped 304 stainless steel base and hinge that mounts to the deck with 4 - #8 screws (not included). The heavy duty black molded clamp folds up to hold a 1-1/2" push pole securely when underway. Folds flat when not in use to reduce tripping hazard. Used by many boat builders, this is an excellent pole holder for the money! Want an extra heavy duty pole holder? Check out #PRE57392!Dimensions:A = Overall length - 2-7/8"B = Mounting holes length on center - 1-13/16"C = Mounting holes width on center - 1-3/16"D = Overall width - 2-1/4"E = Inner diameter of clamp - 1-7/16" (to hold a 1-1/2" pole)Stands 5/8" off deck when folded down