Monster Tool Company 1/8 x 1-1/2 RH w/CR Carbide Boring Bar, 74265, 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: 1/8, MinBore: .100, MaxBore: .400, Projection: .025, Material Base: Carbide, Finish / Coating: Uncoated, MPN: 74265, PKG QTY: 1 PC