Key joint are preformed sheet metal joints that enable loads to be transferred between adjoining slabs while allowing lateral movement and limiting differential vertical movement. They are shelf supporting and height adjustable with a drive’n’twist stake system. They can be used as plain joint or have a temporary or permanent capping applied (sold separately). Key joint is available in both 3m and 6m lengths. It has knock out holes for 16mm or 20mm square dowels every 150mm given flexibility in centres (150mm, 300mm, 450mm and 600mm).