#29 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 • Four Punch and Chisel

• Four Punch and Chisel Types – Set includes pin punches

Part Number: assortment-kit-2811440 Pieces - Coarse & Fine Thread

preserves tip geometry

Inch / Metric: Inch

Material Carbon Steel

#29 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 • Four Punch and ChiselProduct 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