RIFFE's Carbon Fiber Pole spear with a 3 Prong Pinch Head Assembly is an excellent addition to your pole spear. This is made from non-corrosive hardened steel. It has an angled pinch head tip which forces prongs to open when your catch is hit. The machine threads are designed for easy entry with a bite on retraction. There is a center spring tension which keeps the catch secure on the prongs.
The 3-Prong Pinch Head Assembly - with Adapter (5/16" stub shaft w/ 6mm thread both ends) (RPS-H01)