Woodstock D4031 Mortising Attachment Kit

Includes cast-iron chisel holder and fence hold down assembly quill alignment pin four chisels (1/4" 5/16" 3/8" 1/2") three 2-piece bushings three split bushings and carrying case. Bushing sizes include: 2.945" OD x 2.600" ID 2.600" OD x 2.366" ID 2.366" OD x 2.170" ID 2.600" OD x 2.000" ID 2.600" OD x 1.880" ID and 2.600" OD x 1.570" ID. Just match your drill press quill diameter to the nearest ID bushing dimension. Chisels have 3/4" outer diameter.