BOSCH CO21B 21-Piece Assorted Set with Included Case Cobalt M42 Metal Drill Bit with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, Light-Gauge Metal, Aluminum
Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminumEnhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bitsHigh-heat resistant bits – withstand high-temperature applications for extended periods of timeThick web-helix design – provides additional stability in tough applications.Case Type:PlasticSurface-hardened tip – penetrates tough abrasive materialsSplit points on bits 1/8 In. and larger – allow for easy starts with no skating, eliminating the need for a center punchThree-flat shank on bits 3/16 In. and larger – deliver better bit grip
