The model #SS3 is able to hone chisels, plane blades and scraper-plane blades up to 1/4 inch thick and 3 inches wide! Use the #SS3 over stones up to 3/8 inches thick and 4 inches wide or  if you are using the "scary sharp" technique, on a flat surface such as your table saw top or surface plate with abrasive paper or pastes. Positive stop detents for setting your bevel angle from 5 to 60 degrees. "Back beveling" your plane irons, to effectively increase the pitch angle for tough, figured woods, could not be easier using the new 5 or 10 degree positions. Now with the NEW Delrin alignment slide! $74.99