MCFEELY’S PROMASTER® PLUS. ProMaster® Plus with patented thread design features cutters built right into the thread design. Tiny saw blades are formed into first three to four thread revolutions that cut through wood while displacing a minimum amount of material... Read more More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.