Center cutting, with 30-degree helix. Neck diameter reduced .020 inch on all sizes for required clearance in long-reach applications. Tolerances: Shank diameter, -.0001-.0003. Cutter diameters, 3/16-1/4 inch, +.000-.002; 5/16-1 inch, +.000-.003. Ball radius +.005-.000. TIR maximum, .0005.
Warning:This product may expose you to chemicals including Nickel, Chromium, or Lead, chemicals known to the State of California to cause Birth Defects and/or Cancer. For more information go to www.P65Warnings.ca.gov