#30 x 12" Cobalt Aircraft Extension Drill Bit Hex Shank Step Drills and countersinking

and countersinking

this bit is made for durability in demanding applications

Our premium SDS Drill Bits are auto-weld manufactured with a Japanese-made carbide tip

Designed to drill and tap in one operation

also known as center reamers

#30 x 12" Cobalt Aircraft Extension Drill Bit Hex Shank Step Drills and countersinkingDescription The M35 Cobalt Drill Bit is an extra long drill bit designed for drilling tough materials like stainless steel, Inconel, and titanium. It has a 135 split point tip for fast and accurate drilling and is manufactured to Aerospace Standard 907 for superior quality. The drill bit has a round shank that works with a wide range of tool holding systems. It displays high red hardness, allowing for speeds up to 30% faster than conventional M2 high