Original Dynamite Tapered Body Reamer. Dynamite tools feature that stylish red anodized aluminum handle your familiar with, and has a replaceable steel tip. To make wrenching easier on your hands, the handles include rotating plastic end caps to swivel in your palm. Plus, the end caps are color coded for easy identification. This reamer features a double edged cutting head, with a scale on one side that will allow you to measure the size of the hole you are cutting.