7/8" 100° HSS 6-Flute Chatterless Countersink Cobalt Metric Drills Their high red hardness allows

Their high red hardness allows for speeds up to 30% greater than conventional M2 high-speed steel and the 135° split point tip ensures fast and precise drilling

can be used to enlarge existing holes

2770" BODY DIAMETER 1/2" MATERIAL HIGH SPEED STEEL THREAD SIZE 1/4-28 CUTTING ANGLE 100° SUGGESTED PACK QTY 1

SIZE 1" OVERALL LENGTH 2-3/4" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1/2" NUMBER OF FLUTES 1 SHANK TYPE ROUND CUTTING ANGLE 120° SUGGESTED PACK QTY 1

7/8" 100° HSS 6-Flute Chatterless Countersink Cobalt Metric Drills Their high red hardness allowsSpecifications SIZE 7 8" OVERALL LENGTH 2 3 4" MATERIAL HIGH SPEED STEEL FINISH UNCOATED (BRIGHT) SHANK DIAMETER 1 2" NUMBER OF FLUTES 6 SHANK TYPE ROUND CUTTING ANGLE 100 SUGGESTED PACK QTY 1 6 flute countersinks, also known as chatterless countersinks, are designed to remove more metal compared to countersinks with fewer flutes. They are also more effective on harder materials and provide a more chatter free cut.