29/64" Cobalt Drill Bit

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Master Mechanic, 29/64" x 5-5/8", High Speed Steel With Cobalt Drill Bit, 135 Split Point, Jobber Length, 3/8" Shank, 135 Split Point Design With 4 Cutting Edges Allows Quick Penetration & Eliminates Walking, 8 Percent Cobalt Content Provides Heat Resistance & Delivers Maximum Cutting Efficiency At Temperatures In Excess Of 1,000 Degrees Fahrenheit, Recommended For Drilling In Hard Metals Such As Heat Treated Steel, Stainless Steel, Chrome, Manganese Steel Plus Titanium & Armor Plate, Carded.