Speargun Shaft, American Style, "Hydra-fin" (Us Cut), 9/32" (7.14mm) Finest quality American sourced Stainless Steel heat-treated 17-4 3 - Welded Fin Shaft 9/32" or 7.14 mm Hawaiian style floppers American Square-Cut shaft, fits Alexadar, Riffe, and other similar trigger mechs