Cogsdill, a division of Whitney Tool Company, Inc, designs and manufactures the Burr-Zit deburring tool to provide unmatched performance and durability. Burr-Zit tools allow innovative deburring of both sides of a hole in a single application, even when only one side is accessible. Composed of quality high-speed steel, Burr-Zit tools can deburr thousands of holes before they require resharpening.