• Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals • Cobalt steel extends cutting edge life and maintains cutting life after resharpening • Extra hard drill for greater wear • 135° split point tip starts on contact, cuts with less force • Rubber overmolded case protects kit if dropped • Tap & Drill selection chart for convenient reference. • Automatic indexing for easy bit access and identification • Removable cartridges: easy to carry bits from case to worksite • Sizes include 1/16" to 1/2" in 1/64" increments
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