If you own a Benchmade Ambush and, like myself, found that after a lot of EDC the black paint on the handle gets chipped off by contact with keys or coins in your pocket, here's an idea. I took the knife completely apart with my torx tools (which was fairly easy) and then used a drill spinning a wire bristle brush head to remove all the black paint from the handles, then put the knife back together. The wire brush was coarse enough to leave a ridged texture in the aluminum of the handle, giving it more grip in my hand than it had when it was brand new. The brushed aluminum is also rather good looking, though it would not be very covert in any type of usage where you would not want a surface that reflects light.