"The Patriot Docks Pipe Holder provides a strong, adjustable mounting point for compatible galvanized dock support pipes, allowing stationary and roll-in dock systems to be securely supported in a variety of freshwater conditions. Designed to mount directly to compatible Patriot Docks dock frames, the pipe holder allows the support pipe to slide freely for precise dock height adjustment. Constructed from heavy-duty electrogalvanized steel, the bracket delivers long-lasting strength and corrosion resistance. The 12"" pipe sleeve features an inside dia. of 2-1/16"" to accommodate a 1-1/2"" Schedule 40 galvanized pipe (1-7/8"" outside dia.), while dual clamping bolts securely lock the pipe in position. The pipe holder attaches to the boat dock frame using two 1/2"" frame bolts spaced 8"" apart. Once installed, simply insert the compatible galvanized support pipe and add a compatible foot plate or auger (not included) to complete the dock support assembly. Creates a height-adjustable support point for compatible Patriot Docks dock systems Ideal for new docks, dock upgrades, and replacement support systems Compatible with 1-1/2"" Schedule 40 galvanized steel pipe Heavy-duty electrogalvanized steel construction 12"" pipe sleeve with a 2-1/16"" inside dia."