Monster Tool Company 3/8 x 2-1/2 RH w/CR Carbide Boring Bar, 74342, 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, 3/8, MinBore: .320, MaxBore: 1.250, Projection: .080, Material Base: Carbide, Finish / Coating: Uncoated, MPN: 74342, PKG QTY: 1 PC