This is the JBL Little Nuke 5/16" Bullet Nose Slip Tip Spearfishing Toggle
When a tactical strike is necessary nothing beats the Little Nuke. Precision machined 17-4
stainless and heat treated to maximum hardness, this slip tip means business. Low profile shape and a compact overall size creates minimal drag and delivers pin point accuracy. It's the solution for any rogue fish you may be hunting. 5/16″ Little Nuke measures 5″ long and is available with 6mm or 5/16″ shafts threads for 5/16″ and 3/8″ shafts.