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4.50 in
0.31 in
053006100
Blitz Bit Jobber Length Fractional Drill Bit, 5/16" Diameter, 0.3125 Decimal Equivalent, 3-3/16" Flute Length, 4-1/2" Overall Length, M7 High Speed Steel, Black & Gold Finish, 135° Split Point, Straight Shank, Heavy Duty, Right Hand Spiral, Made in USA
Designed to withstand high rotational speeds without losing their cutting edge
Can operate at elevated temperatures without losing their hardness or becoming brittle
Provides exceptional hardness and durability, allowing them to withstand high temperatures and resist wear