Casafoyer Cobalt Aircraft Extension Drill Bit 11/64 x 12″ - Pack of 2

Cobalt Aircraft Extension Drills are designed to outperform standard high-speed steel drills due to their higher cobalt content making them particularly effective for cutting through tougher metals like stainless steel and nickel alloys. They feature a gold oxide surface treatment which is thinner than the more common black oxide allowing for easy identification of cobalt steel tools while maintaining performance comparable to uncoated options. These drills are manufactured in accordance with National Aerospace Standard 97. The 135 split point design ensures self-centering and minimizes thrust during use. For sizes smaller than 1 16 inch a standard 118 point is utilized. Additionally Aircraft Extension Drills are offered in lengths of 6 inches and 12 inches catering to applications that require extended reach.< p>