Overview Reviews Product Description HSS Bright and black finish Right hand cut 3 ground flats on shank for no-slip chucking Short length for use in tight spaces Left hand helix cuts with a shearing action sending chips forward giving a superior hole quality with less grabbing and binding in the hole For heavy duty reaming in structural steel assemblies as well as truck/trailer manufacturing and repair Clarkson Osborn Catalog Product Videos Custom Field Diameter 5/16" Flute length 2-3/4" Overall length 4-5/8" Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 5/16" HSS Aligning Reamer RE19020 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *