5 Piece Cobalt Quick Change Hex Shank Drill Bit Set (1/4" - 1/2") - High Performance & Durable Cutting Tool | Drill America Welding Supplies For use in re-threading existing

For use in re-threading existing threads

Size: 7/8"-18

Torch Compatibility: Compatible with most oxy/fuel or plasma torches

Each reamer expands to the next size

Enhance your safety and performance with the Drill America - 1 x 4-1/4 x 1-1/4 Hole Concave Cutter

5 Piece Cobalt Quick Change Hex Shank Drill Bit Set (1/4" - 1/2") - High Performance & Durable Cutting Tool | Drill America Welding Supplies For use in re-threading existingCOHEX Quick Change Cobalt Drill Bits are designed for use in hand held and impact drills. Cobalt Drill Bits are effective in drilling tough, high tensile strength materials and display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed. These drill bits have a 135 split point tip for fast penetration and accurate drilling and a 1 4" Hex Shank that can be used in quick change impact drivers. They are gold oxide