THIS HERTEL CORNER ROUNDING END MILL FEATURES A 1/2-INCH (0.5000 DECIMAL INCH, 12.7000 MM) RADIUS, WITH A MILL DIAMETER OF 1-3/8 INCHES (1.3750 DECIMAL INCH). THE CUTTING TOOL IS CONSTRUCTED FROM HIGH SPEED STEEL AND UTILIZES 3 FLUTES. IT IS A SINGLE-END CONFIGURATION WITH A 1/2-INCH SHANK DIAMETER.