Neptonics Completely Custom Shafts - Neptonics
Neptonics Completely Custom Shafts
Custom Speargun Shafts1

Neptonics Completely Custom Shafts

Neptonics is now offering custom made speargun shafts. We machine these shafts every Wednesday and ship them to you on Thursdays. (Please not that custom shafts are 3-4 week production time due to Covid-19 delay)

  • 9/32, 5/16, 11/32 & 3/8 shafts
  • Threaded, Flopper & Double Flopper
  • Rest Tabs Option
  • Neck Down Option


Advantages of a Necked Down Shaft   Improved hydrodynamics.... By recessing the slidering your shaft gains a 20% increase in hydrodynamics which equals a faster shaft, longer range and a harder punch.

  • Increased Hydrodynamics
  • Faster shaft speed
  • Longer Range
  • Harder Hitting / More Punch

Base Price $84.99


Additional information

Weight 20 oz
Rest Tab

No Rest Tab, with Rest Tab