It lets you hook the bands. This extends you're reach to get the load started. Once its started simply hook it to the first notch or fin tab on your shaft and then grab your bands to finish the load. We added a tuna clip to it so you can store it on your belt clip point.
The assist is constructed of 5/16" band material, which essentially acts as a band extension. The hook allows the user to snag the wishbone of their speargun and pull back on the load assist like it is a normal band. Then you can use the assist's euro wishbone to notch it into any shaft, American or European. The assist has an incorporated tuna clip to allow for easy attachment to a d-ring on a weight belt. This enables an effective and functional piece of equipment for any diver that finds it useful.