Trend 46/910X1/4TC Guided profiler 12.7mm dia x 4mm cut With bearings mounted on end of cutterProfiler with shank mounted bearing guides.For use with router mounted above or below a table when following a template. For profiling and rebating applications only. Not for plunge cutting/grooving. A 3mm maximum overlap should be left before trimming. Refs. 46/910, 46/911 and 46/91 have a shorter cutter lng. for use on thin boards. They are ideal for template making.Specification-D=1/2 inchD=12.7 mmC=4 mmOL=60 mmB=12.7 mmShank Diameter=1/4 inch