Made from 48.3mm diameter x 3.2mm thick grade steel tube, Cuplock System Standards (Vertucal) are formed by two cups a fixed bottom cup which is welded to standard (Vertical) at pre-located intervals i.e. 500mm and a sliding top cup. The forged blade ends of the ledger (Horizontal) are located into the bottom cup. The top cup is moved down and rotated to secure the components in place and tightened by a hammer blow to give a positive and rigfid connection.