#40 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 Round shank for use in

Round shank for use in a wide range of tool holding systems

Part Number DMS04-1140

Part Number DWDDL12X5/16

Size m18 x 1

#40 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 Round shank for use inProduct 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. They have a 135 split point tip for fast penetration and accurate drilling. Compared to a conventional 118 degree tip, these drills wont go "walking" on you. Ideal for drilling