Head Lock Ring Tool for the AP Diving Inspiration Vision Rebreather

Print it yourself or [order from Shapeways](https://www.shapeways.com/product/edit/9S8UBKEAX)!

This tool can be used to remove / tighten the big lock ring on an [AP Diving Inspiration Vision](https://www.apdiving.com/en/rebreathers/which-ccr/) rebreather. This kind of disassembly is required when replacing the standard 3 cell holder with a 4 or 5 cell holder like [this one](https://www.narkedat90.com/apd_vision_evo_4th_cell_holder_p/0005.htm) sold by narked at 90.

Printed in PETG.