Trend IT/7210071 Groove Cutter With Scorer 4mm 180X4X30 4-6 mmHard wearing steel tool body complete with disposable tungsten carbide knives and scorers for improved finish. Suitable for producing grooves and slots in softwood, hardwood and man-made boards (with or without coating) on a spindle moulder. Can be used with spacer rings for comb jointing.Specification-D=180 mmKerf=4 mmBore=30 mmNo. of Teeth=8+8Max projection depth=55 mmRecommended speed=4200-7200 rpm