Trend 2/2X1/4HSS Single flute cutter 3.2 mm diameterSingle fluteThese are made from a single pce of High Speed Steel, ground with a very fine edge. They are only suitable for non abrasive materials, but will give a superior finish in soft timbers. Generally HSS cutters are slightly less expensive than their TC grades, but can be more suitable for certain applications.For fast free cutting , these HSS cutters have extra clearance.Specification-D=1/8 inchD=3.2 mmC=8 mmOL=40 mmShank Diameter=1/4 inch