KOAH 5/16" Threaded Spear Shaft is a quality US squarecut finned and threaded speargun spear featuring:

• Threaded 5/16"/24ct end suits most of the slip tips in the market.
• Unique high strength precision cast fins offering smooth surfaces to reduce cutting of dyneema.
• Shooting line attaching point through the first fin, to minimise weak spots in the shaft.
• High smooth fins suit enclosed and open tracks as well as provide the height for multiple band loading on one fin.
• Squarecut cutout for all US style mechanisms, like KOAH, Riffe, Neptonics, Hatch etc.
• 140cm and 150cm have two loading fins.
• 160cm and 170cm have three loading fins.
• Shark fins are located close together far back, close to the mechanism, to allow maximum load length and power.
• Rear fin is 43mm from the shaft butt end.

All KOAH Shafts are constructed from the highest grade centreless ground 17-4 stainless steel which is machined and heat treated in house. Being centreless ground means the selected size of the raw shaft material is actually ground down from a larger diameter. This means that the final diameter of the shaft is extremely accurate and larger diameter imperfections and steel stress points have been removed.