Do you shoot an Ocean Rhino, Biller, or Sea Hornet speargun?

If so, then you absolutely need to have the revolutionary new shaft called the “Evolution”. The Evolution is being called a “total game changer” by many industry leaders.

We are currently the only source of this unique spearshaft, made by the premier spear shaft maker in the U.S.A.

The Evolution shaft is designed to be used as a freeshaft but can be converted to a line shaft instantly with no increase in size over a traditional 5/16" spearshaft.

The Evolution uses a combination of special ring and shaft that slides onto the shaft to instantly convert it to a line shaft.

There is no part of the shaft that is larger than a normal 5/16" spearshaft with a standard 5/16" flopper. 

The shaft can be rear loaded into the muzzle since there is no additional hardware on the shaft!

The Shaft is paired with the special "Evolution Slide ring” that is mounted to the gun along with a sufficient length of mono.

See the video at bottom of page for details of how this revolutionary new shaft works.

Shaft tips are threaded point

*Freeshaft to Lineshaft or Lineshaft to Freeshaft instantly!
* No increase in Hydrodynamic resistance due to slide rings, bushings or cones 
* Shaft pairs with our exclusive "Evolution slide ring" (sold separately).
* No increase in hydrodynamic resistance over a normal 5/16" shaft.
* Can be rear-loaded into muzzle since there is no additional hardware on shaft 
* Shaft tips are threaded point

* "Evolution" ring not included!
Must be purchased separately!

 Contact us for custom  sizes