1/4" shank x 1/4" cut dia. x 2-1/2" over all length x 7/8" cut length Compression spiral router bit
This bit gives a clean cut on the top and the bottom of the board.
If your looking for onsrud 60-112, vortex 3110, whiteside UD2102, amana 46170, or s.e. tool SUD448 you should try our SP033 made in Salem Oregon USA.