31/64" x 12" Cobalt Aircraft Extension Drill Bit Shopify Collective Flat Files are used by

Flat Files are used by machinists

This set includes 1/16

Size 9/16"-12

The carrying cases are made from a high-density polyethylene material that withstands common lubricants

Windproof Fleece Palm with Duraclad® Reinforcements

31/64" x 12" Cobalt Aircraft Extension Drill Bit Shopify Collective Flat Files are used byProduct 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