The original Super Wrench  16 inch is for serious users. It will undo or tighten just about anything even a tow ball. The unique grip locks on to any bolt, nut or pipe and because it can lock onto round surfaces you can even get grip of things that are burred or rusty. The Super Wrench can be used as a ratchet as its spring loaded and  it only locks on in a forward movement  in reverse it releases.

The 16 inch is 2.1kgs

A great addition to this wrench is the original  Super Wrench 4 pack.