The Whiteside SA2075 is a solid carbide, letter "O" size, single flute bit made primarily for routing plastics. Whiteside Machine Company - Claremont, North Carolina.
Specifications
SH = Shank Size. CD = Cutting Diameter. CL = Cutting Length. OAL = Overall Length.
1/4" SH X 1/4" CD X 3/4" CL x 2-1/2" OAL