Step Drill Bit: 3/8" Shank Dia, High Speed Steel, 9 Hole Sizes MPN:SDD43274661

With an overall length of 1-7/8 and shank diameter measuring 3/8, this step drill bit's high speed steel construction increases durability when dealing with harder materials, making it ideal for fabricators or maintenance personnel working in metals or plastic production. It features a unique cutting edge geometry enabling multiple size options: #40 to #60 in 5 steps for quicker hole cutting adjustments fitting 9 gauge to 21 ga material thickness. From automotive assembly lines reducing re-driling tasks, shipbuilders constructing bulkheads requiring precision pilot holes or electrical engineers connecting wiring terminals during prototyping stage, this versatile drill bit ensures consistency providing the appropriate size in any application saving time, money and resources.