Overview Reviews Product Description HSS Right hand cut Left hand helix Bright and black finish Square end for tap wrench Hand reamers are used for the final sizing of holes Left hand spiral flute design pushes chips forward out of the hole and allows the reamer to be used in holes that have an interruption. Clarkson Osborn Catalog Product Videos Custom Field Diameter 5/16" Flute length 58mm Overall length 115mm Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 5/16" HSS Hand Reamer RE41020 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *