Rob Allen 8mm Triple Notch Drop BarbA breakthrough in spearfishing the Rob Allen Drop barb shaft will change how we hunt everything from hard fighting reef fish to prize bluewater game fish such as Marlin, Tuna and Wahoo. The unique system ensures supreme accuracy with point of aim being the same as your daily use Rob Allen straight shaft, while improving holding power and landing rate with the unique drop barb system which auto releases after penetrating the fish. Hardened spring steel