Amana 47140 Carbide Tipped Flush Trim 3/4 D x 1/2 CH x 1/2 Shank x 3-1/4" Router Bit w/ Lower Ball Bearing Excellent for template work! Use these flush trimming bits for laminate work or for template and pattern work. For template application, the bearing follows the template, while the cutting edges trim the workpiece. Withthe router hand held, the template is on the bottom of the work. With a table-mounted router, the template is on top.The two-flute bit is a good general-purpose choice, providing fast cuts and good finishes.#RC-47104Insert Router BitInsert flush trimming router bit priced comparably to brazed router bits with at least 4 times longer tool life.