Amana Tool 54295 Colonial Door and Window Casing 2-Flute Carbide Tipped Router Bit, 1/2-Inch Shank,Amana Tool,54295" /> Cutting diameter 1-17/32-Inch 2-3/4-Inch cutting height 1/8-Inch radius 1/2-Inch shank, 2-flute. Carbide tipped, industrial quality Maximum RPM = 16,000! For use only in a table mounted router only, not for use in a handheld router.