Questions

#89 Gene Winkler asks about Whiteside DB4-57 RH Dowel Drill CT 4mmCD 57mmOAL Jan 27, 2021

I'm looking for something to cut a long dowel shaped piece of wood, 1/4 " in diameter. For the DB4-57, what does the SC 6 mm, the CT 4mm and the CD 57 mm refer to?