Dock Heavy Duty Hardware: Constructed from marine grade 1/4" thickness standard hot-dipped galvanized steel hardware and welded onto a heavy duty 5" x 5" backer plate, featuring solid, durable and rustproof to fit for the freshwater and marine environments. Stationary dock heavy duty corner leg pipe holder is aiming to provide the long useful service for your floating docks. Build Floating Docks: Stationary dock heavy duty side leg pipe holder bolts to the corner of the wood floating dock frames to support a dock pipe leg, allowing the floating dock to smoothly slide up and down with the water levels and stabilize the dock on the lake. Compatibility: The inner diameter of the floating dock pipe holder fit for round dock side leg pipe up to 2″ OD. Accommodating various pipe sizes by side bracket set screws. The floating dock heavy hardware mounting holes is 7/16”fitting for 3/8” carriage bolts (carriage bolts are not included). Easy to Use: Pre-punched bolt patterns allows to easily install directly to the side of dock frame. Installed the dock side leg pipe holder in the wooden floating docks with four carriage bolts (not included). Loosen and tighten the set bolts with shoulder nut to adjust the height of the dock, allowing the dock float. Warm Tips: The industry standard calls the floating dock pipe size as 1.5″ schedule 40 but the O.D. is actually 1 7/8″. Please check the size of dock leg pipe before purchasing. Other Dock Heavy Hardware for Building Floating Docks: The stationary dock side leg pipe holder bolts to the side of the wood floating dock frames to stabilize your pier (ASIN: B0D47V2P9M). Connector Hinges used for between-dock and shore-to-dock or ramp connections and not fit for individual dock sections (ASIN: B0D47VHP8J). If you need these dock heavy duty hardware, please search the ASIN on the amazon.