Outdoor Edge Sentinel runs a 3.15″ drop point blade in 8Cr13MoV; Outdoor Edge Razor VX3 runs 3″ of drop point in 420J2. The Outdoor Edge Sentinel is the lighter of the two by 0.10 oz.
01234567 in
Outdoor Edge Sentinel · Drop Point
3.15″ blade · 3.4 oz · ~0.77″ tall (derived)
Outdoor Edge Razor VX3 · Drop Point
3″ blade · 3.5 oz · ~0.73″ tall (derived)
Length and spine thickness drawn to true scale from published specs. Outline is the shape family's, not a trace of this model.