Delta 17-924 Mortising Kit For Drill Presses Everything you need to cut square holes for various-sized mortise and tenon joints Fits drill presses with quill diameters of 66m/ 50.8mm/ 48mm/ & 38mm This includes Delta Model 11-980/ 11-990/ 14-070/ and 17-900 Drill Press Also works with 11-090 Radial Drill Press Sturdy carrying case holds everything in place for easy storage