The Ultramarine by Extrema Ratio is a high end dive knife crafted for elite military service. With an overall length of 11.625″ this features a thick Bohler N690 5.875″ length and .25″ thick stainless steel blade, Mil-C-13924 coated corrosion resistant finish and partial serrations and an integrated strap cutter. This comes in the original hard case with nylon and plastic sheath with Velcro fasteners.

Condition: This appears to be in unused condition.