Buck Knives 691 Zipper-R Fixed Blade Knife 4.125" Drop Point with Gut Hook 420HC Satin Blade Rubber Handle Black

From MidwayUSA

The Buck Zipper-R, like its name suggests, is a gut hook knife that works just like a zipper. The combination of edge angle and hook length performs beautifully. Back in 1993, there were a lot of gut hooks on the market that just didn't do the job. So, CJ Buck, a 4th generation Buck helped to design a knife that would live up to the family name. This knife is a tool you can count on. This is Buck's standard blade material because it approaches the wear resistance of high carbon alloys while delivering the corrosion resistance of chromium stainless steels.