Delica 4 | Flat GrindIn 1990 Spyderco shook things up by introducing two knives, the Delica and Endura. First of their kind on the market, both folders opened up the knife market to lightweight performance, one hand open pocketknives that just about everyone could afford. They settled as Spyderco's top two bestsellers and their improvement hasn't slowed since. The blades are full flat ground VG 10 with a thinner highly refined cutting edge and a larger 13mm opening hole.