At first glance the Trim Tool from Black Diamond might look like a letter opener but a letter opener won't cut through thick nylon and tacky glue in order to trim your climbing skins to the perfect size. Simply attach your too-wide stock climbing skins to your skis and run this tool down the edge of your skin. As you do so skin material will fall away and you'll be left with a skin perfectly contoured to the shape of your powder boards. Step away from the razor blades and scissorsthis tool replaces both.