About This 12" Adjustable Leveling Jack: The set includes four leveling jacks, each featuring a 12 inch adjustable leveling range. This allows you to easily adjust the height of the adjustable scaffolding leveling jacks to meet your needs. Sturdy Material: Use of high-strength steel ensures that the hollow screw jacks with base plate has excellent load-bearing capacity and strength. The galvanized coating is designed to withstand the elements, making the galvanized leveling jack suitable for use in harsh environments. Stable Base: The base is composed of precisely welded surfaces that are 0.19" thick. The design incorporates a 5.3" square soleplate to maximize footing and increase stabilization. The base plate holds the leveling jacks firmly in place during use, providing extra support. Easy Installation: The screw adjustment mechanism is simple to operate. The screw diameter and surface treatment process effectively reduce friction resistance, ensuring a smooth and effortless adjustment process. Installation and commissioning require minimal operating force. Wide Application: The 12" adjustable leveling jack is suitable for the construction of high-rise buildings, bridges, tunnels, and other large projects, especially on uneven ground or slopes. Overview Material : Galvanized Steel Brand : Bularie Color : Silver Item Weight : 13.7 Pounds Item dimensions L x W x H : 14.3 x 8.9 x 6 inches