29 Piece Cobalt Jobber Length Drill Bit Set, 1/16" - 1/2" with 3/8" Shank, DWDDCO Series BoltsandNuts.com Size 3-7/8"-8

Size 3-7/8"-8

Diameters: #2-56

Part Number: 31C300ASBSS

Part Number: 75C500HCS8Y/USA

Part Number ANC5-530-169

29 Piece Cobalt Jobber Length Drill Bit Set, 1/16" - 1/2" with 3/8" Shank, DWDDCO Series BoltsandNuts.com Size 3-7/8"-8Product Description Cobalt drill bits are are effective in drilling tough, high tensile strength materials such as cast iron, inconel, stainless steel and titanium. They display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. These drill bits are jobber (standard) length with a round shank for use in a wide range of tool holding systems. They have a 135 split point tip for fast penetration and