HSS Morse Taper Shank Machine Reamer (B101) HSS Spiral Flute straight Morse Taper shank machine reamer for opening and finishing existing holes to H7 tolerance Suitable most ferrous and non-ferrous materials 7° helix, Left Hand Spiral for excellent surface finish Manufactured to BS328 standards Note: Only to be used for through-hole machining Standards: ISO/BS328 Color: HSS Weight(KG): 0.150