Loosing fish because ones hook is not sharp enough is no way to enjoy fishing..Diamond grit grooves are what sharpen hooks the best, that is why we have two on the MD grit side. We also round the corners on both ends so it doesn't inadvertently snag or tear pockets, and added a nice bright leash so it's easy to find.
Two grooves on MD grit side as it is used the most often
One on Fine grit side that is used for final pass
Individually inspected to our Quality Control standards