Trend TR47X1/4TC Roman ogee 4mm radius x 15.9mm cut Bearing Guided Roman OgeeFeatures 2mm micrograin Tungsten Carbide tips, for cutting the most abrasive materials to give extra long life.PTFE coated, indicated by distinctive black colouring.Can be used on hardwood & softwood, fibreboard, plywood and particle board.Etched dimensions on extra long 40mm shanks, for quick identification.By raising the cutter, the top quirk is removed.Specification-D1=25.4 mmC=5/8 inchesC=15.9 mmOverall lng.=64 mmB=9.5 mmR1=4 mmShank Diameter=1/4