Extrema Ratio Ultramarine N.E.D.U.
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ULTRAMARINE N.E.D.U is a variant developed and purchased by the U.S.A. Naval Experimental Diving Unit. Conceived of as a work tool, not as a fighting knife, it was accordingly designed with a tipless blade. For greater quickness in drawing, the sheath comes without an upper flap. The inside-hilt blade tang undergoes a special cataphoresis process to prevent corrosion. The knife is supplied in a case with: a cordura fabric ankle sheath, two BELT-CLIPs allowing for separate use of the inner hard sheath, and a blade maintenance spray-can.
TECHNICAL SHEET
Weight g.:
360
Weight oz.:
12,7
Blade Length (mm):
136
Blade Length (in):
5,4
Total Length (mm):
274
Total Length (in):
10,8
Blade Thickness (mm):
6,3
Blade Thickness (in):
0,25
Blade Material:
BöHLER N690 STEEL (58HRC)
Blade Finishing:
MIL-C-13924 BURNISHING
Main Grid:
FLAT
Serration (in):
2,8
Serration (mm):
70
Handle Material:
NYLON
TECHNICAL SHEET
Weight g.:
360
Weight oz.:
12,7
Blade Length (mm):
136
Blade Length (in):
5,4
Total Length (mm):
274
Total Length (in):
10,8
Blade Thickness (mm):
6,3
Blade Thickness (in):
0,25
Blade Material:
BöHLER N690 STEEL (58HRC)
Blade Finishing:
MIL-C-13924 BURNISHING
Main Grid:
FLAT
Serration (in):
2,8
Serration (mm):
70
Handle Material:
NYLON