Spyderco Endura 4 C10PGYW Emerson Wave Opener pocket knife

The Spyderco Endura4 C10PGYW Emerson Opener is a knife that clearly belongs to the famous Spyderco Endura-series, combined with a trick by knife designer Ernest Emerson. The hook on top of the blade can automatically open the blade when you take it out of your pocket. The hook gets stuck on the edge of your trousers pocket. This way, you pull the blade out of the handle, making the knife immediately ready to use.