Premium Heavy-Duty Post Holders for Lasting Outdoor Structures Engineered for ultimate durability, these industrial-grade post holders are crafted from robust 13-Gauge galvanized steel and protected by a weather-resistant black powder coat finish. The innovative U-shape design lifts 4 x 4 lumber posts off the ground, providing superior moisture protection to prevent rot and significantly extend the life of decks, railings, pergolas, and other outdoor projects. Enjoy quick, wobble-free installation with pre-drilled holes for wood surfaces and an integrated rebar spike for secure embedding in concrete. Built to withstand harsh elements and provide code-compliant structural support for decades. Material: Metal.