https://www.tannerbolt.com/cha-800-1-2x60-1-2-800-four-flute-machine-countersink-60-degree-countersink-angle-1-2-shank-diameter-3-7-8-overall-length-champion-800-1-2x60
1/2" - 800 Four Flute Machine Countersink - 800-1/2X60 | Tanner
1/2" - 800 Four Flute Machine Countersink, 60 Degree Countersink Angle, 1/2" Shank Diameter, 3-7/8" Overall Length, Champion 800-1/2X60
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