The Whiteside 3051 Keyhole Router Bit is used to cut a hidden t-slot in the back of picture frames, small shelves and other wall decorations. Carbide tipped. Single flute. Whiteside Machine Company - Claremont, North Carolina.
SH = Shank Size. LD = Large Diameter. SD = Small Diameter. CL = Cutting Length. OAL = Overall Length.
1/2" SH X 3/8" LD X 3/16 SD X 7/16" CL X 2-1/8" OAL