S&F STEAD & FAST Cobalt Step Drill Bit for Metal, Three Spiral Flute, 3/16"-1-3/8", 1 pc, Heavy Duty Unibit, 3/8" 3-Flat Shank, HSS M35 Steel Step Bit for Sheet Metal, Stainless Steel, Aluminum
$59.99
Description
Step bit made with cobalt high speed steel for superior HRC hardness of 64-66 at high temperatures, with a Titanium Aluminum Nitride coating with HRC hardness of 89 for outstanding service life and heavy duty use to cut extra hard metals.One step drill for 4 sizes: 3/16" 7/8", 1-1/8", 1-3/8"; use one uni bit and save the hassle of changing drill bits when cutting different size holes.Three spiral flute design in unibit step drill bit for superior cutting properties and controlled and efficient removal of chips.Step bits for metal with CBN-ground flutes for extra sharp cutting edges to cut smooth, burr-free holes.Clear, laser-engraved measurements on cone drill bit
