The Doughty T57100 Swivel Coupler connects two adjacent tubes together. These are further rotatable through 360 °. The double clamp is 50mm wide and can be loaded up to 750kg (WLL). If the coupler is used to hold loads above persons, the rules of BGV C1 must be observed (BGI 810-3 2007). In this case, the operating equipment may only be loaded with a maximum of half the specified load capacity.