445K49 Carbide Chucking Reamers with Straight Shank

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AlCrN finish left-hand spiral-flute carbide chucking reamers push chips into a hole as they enlarge it to an exact size for a precise fit when installing fasteners or other parts. Left-hand spiral-flute reamers are used for reaming through holes, and they typically leave a finer finish on the hole than right-hand spiral-flute reamers and straight-flute reamers. The reamers' AlCrN finish provides good wear protection and heat resistance during dry, high-speed machining applications. The AlCrN finish is harder and more difficult to crack than a TiAlN finish. It also provides more resistance to oxidation and performs better in applications with high feeds than a TiAlN finish. These carbide reamers have a straight shank that mounts to the chuck of a drill press or similar machining tool.