Spyderco Endura 4 runs a 3.75″ drop point blade in VG-10; Spyderco Pacific Salt 2 runs 3.78″ of drop point in H-2. The Spyderco Pacific Salt 2 is the lighter of the two by 0.50 oz.
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Spyderco Endura 4 · Drop Point
3.75″ blade · 0.125″ spine · 3.4 oz · ~1.29″ tall
Spyderco Pacific Salt 2 · Drop Point
3.78″ blade · 0.114″ spine · 2.9 oz · ~1.34″ tall
Spine thickness, same scale
0.125″
0.114″
Length and spine thickness drawn to true scale from published specs. Outline traced from the maker's side-profile photo.
Spyderco's nitrogen-alloyed successor to H-1, made for saltwater. Corrosion resistance is effectively total -- this is the one steel on the site you can leave wet -- and it is bought for that, not for edge retention, which is modest. It sharpens easily and takes a serrated edge particularly well.