The NU-D Rated Towing Shackle stemmed from Chris’s frustrations at dealing with ‘difficult to remove’ shackles. 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.’’

After refining the shackle and then developing an early prototype, Chris teamed up with Alistair, a fellow boatie and together they have tested and trade marked the NU-D rated towing shackle.

The NU-D shackle with its signature ‘large pin head’ was presented to the NZ public in the Innovation Tent at the 2018 Fieldays at Mystery Creek, Hamilton. Positive feedback flooded in, including people with arthritic hands who found the shackle easier to grip and others who live in colder climates, were amazed at how easy the shackle was to use – even with gloves on! The enlarged pin head gives the shackle more leverage – a winning design for all!

Chris and Alistair soon realized that they had achieved their goal – they have developed a shackle that will save time and prevent stress for countless boaties, caravaners, farmers, or anyone who tows a horse float or trailer.

The Big Pin Head is the symbolic trademark of the NU-D Rated Towing Shackle – available in a range of sizes, galvanised and stainless steel.

We invite you to give it a try – you won’t be disappointed!

Contact Details

+64 9 212 1968

021 420 576






Our Address

8 Telford Avenue
Mt Eden
Auckland 1041