A single 48mm vertical tube clamp - undrilled, (also known as a palm railing tube clamp - undrilled) for fixing a vertical steel scaffold tube or aluminium tube to a shipping container, as described in this blog.

The clamp comes complete with two M12 x 25mm hex head bolts and two M12 washers. 

You will need (1x) Domino Clamps to complete this assembly and attach your own 48mm tube.