Adjustable Steel Builders Prop. Suitable for vertical and raking support applications. SWL 25mm eccentric load & 1.5º max. out of plumb (Closed). Concentric loading cannot be guaranteed (Tonnes): 1.7 SWL 25mm eccentric load & 1.5º max. out of plumb (Open) Concentric loading cannot be guaranteed (Tonnes): 1.7 SWL when concentrically loaded & 1.5º max. out of plumb (Closed). Metriform or similar systems ensures concentric loading (Tonnes): 3.2 SWL when concentrically loaded & 1.5º max. out of plumb (Open). Metriform or similar systems ensures concentric loading (Tonnes): 2.1