New in box Item #PKTRIM7 $16.50 retail 7mm Basic Barrel Trimmer Barell trimming is an essential step for making a quality pen project. Its used to square the end of your pen blanks and pen tubes prior to final pen kit assembly. The trimmer includes a cutting shaft that fits into a drill chuck or lathe chuck - the shaft will clean the glue from the tubes and act as a pilot for the squaring cutter. 7mm basic barrel trimmer Includes 7mm pilot shaft, 5/8" squaring cutter and wrench. Note there is a reduction line on trimmer shaft. Blades must be lined up exactly on this line. Through hole measures .25".