Overview Reviews Product Description HSS For chamfering, deburring, and countersinking Designed for a more chatter-free performance 4 flutes allow higher feed rates than single flute and greater chip clearance than 6 flute Clarkson Osborn Catalog Product Videos Custom Field Diameter 1/2" Material HSS Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1/2" HSS 4 Flute 82° Countersink ZD74032 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *