Losing fish because one&';s hook is not sharp enough is no way to enjoy fishinga | 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. Features: Two grooves on the Medium grit side as it is used the most often. One groove on the Fine grit side is used for the final pass. Rubber grip for comfort and identification. Leash to tether to pack, lanyard, or zinger. Individually inspected to our Quality Control standards. Weight: 0.9 oz Unconditional Warranty