Looks like a standard 3 prong paralyzer with a fourth coming straight out from the center, extending 2" beyond the other prongs. This center prong acts as an extension of your polespear (for better aiming), while also is the first to penetrate the lionfish with no resistance from any other prongs. The shorter 3 prongs then act as the paralyzers.
Fits polespears with 6m male thread.
Size: 8.75" L x 1" Dia
3 shorter prongs extend from base approx. 5.5"
Single center prong extends an additional 2"