Design to provide a more innovative way to trim/cut materials during the tying process. Cutting Options: Freehand & Fixed. Freehand: leave the knurled tension nut on the handle loose so the blade remains strait in the trimmer. Hold the trimmer in your preferred hand and squeeze the handle like a pair of tweezers to reach your desired blade curvature. Fixed: rotate the knurled tension nut on the side of the handle until the blade reaches your preferred curvature. Key Features: Blade Precision, The TyWheel Trimmer provides the tyer the ability to hold a set curvature during the cutting process which helps one generate a more symmetrical group of flies. Blade Security, The TyWheel Trimmer holds the blade securely in place which prevents the risk of the blade ejecting from the handle and also prevents the opportunity for cuts by removing the blade from your finger tips