This is designed to join tubes at various angles. It is used either individually or in pair with the Tl257 one. The assembly shape allows for smooth adjustments of the rotation angle from 0⁰ to 180⁰. It allows for assembling various tube designs, including those in which it is necessary to join two tubes of different diameters. The Inner diameter of the Tr257 assembly allows for fitting a tube with the external diameter of 22 mm whereas the outer diameter is suitable for tubes with the inner diameter of 29 mm. The assembly is equipped with lugs for a spring hook or a rope.
