Monster Tool Company 3/16 x 2 RH w/CR Carbide Boring Bar, 74276, Features: Mirror polished cutting surface and a 4RMS finish, Lock down flat on shank automatically locates tool on center, NC Generation / BB Series, Made in the USA,, Shank Diameter: 3/16, MinBore: .120, MaxBore: .250, Projection: .030, Material Base: Carbide, Finish / Coating: Uncoated, MPN: 74276, PKG QTY: 1 PC