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Pursuant to CA SB 478, if you are located in California, Airgas cannot display your product pricing until all items have been added to your shopping cart so that we can calculate all applicable fees, including, but not limited to, shipping and handling fees.
The IRWIN UNIBIT HSS Fractional Self-Starting Step Drill Bit is made of high speed steel. Hole sizes are permanently laser-etched on the inside of the flute and will not wear away for easy identification throughout the life of the bit. The bit features a quick change hex shank that secures easily in the drill chuck.
Features
Pilot Point Tip starts on contact for clean, accurate holes and reduces lock-up on breakthrough
No-Spin Shank eliminates the frustration of bit spinning in the chuck
Tapered web provides greater durability to reduce breaking
Size markings are located above the shank to prevent wearing away
