Description of Prolyte: The ST tower is based on S40T mast sections. These mast sections have one-sided horizontal bracing to facilitate safe and easy climbing of the towers, with the use of an appropriate fall protection system. The ST tower uses several sleeve blocks that combine all the trusses from the S and B Series. This makes it possible to fit any of the S Series trusses to all four sides by means of bolted female CCS7 couplers. The ST tower has a self-weight of 120 kg. The ST sleeve block is a fully bolted structural element, making it much stronger and more precise than conventional welded versions. The ST tower is a cost-effective investment. You need only purchase the special parts if you wish to expand your truss system with towers.