The NU-D Rated Towing Shackle stemmed from frustrations at dealing with ‘difficult to remove’ shackles. NU-D owner is a keen boatie and regular trailer user, he often heard of other people’s predicaments of being caught out at the boat ramp without the necessary tools to undo the traditional fiddly shackle. At the same time, you are feeling the heat of holding up a queue while trying to release your boat off the trailer. He decided there had to be a better way – a shackle that can be ‘easier to tighten and loosen without the use of tools.’’