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. "