#13 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 Part Number DWDRSD14

Part Number DWDRSD14

Keystone Thumb

Two "wings" on the base of each shanks help it resist being twisted or pulled out of the handle

as the plating material doesn't accumulate at the tips as with conventional chrome plating

Part Number: Assortment Kit #5101395 Pieces

#13 x 12" Cobalt Aircraft Extension Drill Bit Quantity:1 Part Number DWDRSD14Product 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