Most scaffold base jacks give around 300 to 600 mm of adjustment along the threaded spindle, depending on the model. A wing nut or collar nut sets and locks the exact height. Choose a longer spindle for steeper ground and a shorter one where you only need fine levelling.

Yes, scaffold base jacks are typically made of galvanised steel so the spindle and base resist rust during outdoor and long-term use. The zinc coating protects the thread from corrosion so it keeps turning smoothly. Galvanised jacks suit both facade scaffolds and mobile towers exposed to weather.

Yes, standard scaffold base jacks are made to fit inside 48.3 mm scaffold tube, the common European standard, so the spindle slides into the base of the vertical standard. Swivel-head versions also tilt to follow sloping ground. Check whether you need a solid or hollow (wing-bolt) spindle for your system.

GeZu Impex supplies adjustable scaffold base jacks in galvanised steel, including standard screw spindles, swivel base jacks for sloping ground and wing-bolt spindles for quick adjustment. They come in a range of spindle lengths to suit different heights and load needs. Each is designed to pair with standard base plates and 48.3 mm scaffold tube.