The Pathos Sandvik shafts are heat treaded to reach 52 Rockwells. The stainless used has excellent mechanical properties. The Shark-fin shaft can be used on spear guns with open muzzle. All Pathos sharkfin shafts have the following characteristics:
 
• Sharkfins have a classic shape and they are only 4mm tall allowing for high coefficient of penetration through the water.
• Three sharkfins
• Tri-cut tip
• Low profile stainless steel flopper