HIGH-QUALITY MATERIAL: Our post supports are made of high-quality galvanized carbon steel, ensuring resistance to corrosion, wear, and rust. The 3mm thick steel base plate and M15 vertical threaded rods provide a very high load capacity for roof support, and the heavy-duty galvanized raised post feet can support a variety of pergola legs and other furniture or industrial uses that need to be lifted to a greater height. HEIGHT ADJUSTMENT: Our column supports extend from 55mm to 75mm in height, and the roof bracket requires no machining and can be adjusted at any time on site. They ensure that the scaffolding is safely supported at the required height. A practical and hassle-free solution for your construction projects.PERFECT SIZE: The base plate measures 85 x 85 x 2 mm and has four holes with a diameter of 10 mm. The back plate measures 68 x 68 x 3 mm and has four holes with a diameter of 5 mm. The screw shaft is 40 mm long, with an inner diameter of 15 mm and an outer diameter of 25 mm. Provides a solid and secure base.EASY TO USE: Our raised column bases require no machining and can be adjusted on site to provide temporary support during renovation projects, making them a practical and hassle-free solution for your construction projects. The smooth surface and burr-free edges keep your steps stable and protected from deflection and wear with our heavy-duty steel stabilizers. Widely Used: Our ground supports are suitable for pergolas, canopy columns, balconies, pergolas, shear walls, galleries, water-based columns, cellars, or for reinforcing stairs, balconies, shed wooden columns. The bracket is made of high-carbon steel tube and adopts a bolt structure, which can add safety to products exposed to a humid environment for a long time, especially those used in the garden.