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The ITM xstp-01 is a 13-step cobalt steel step drill bit with a CO-TiAlN (Cobalt-Titanium Aluminum Nitride) coating, designed for fast, clean hole making in demanding materials. It covers 13 diameters from 1/8 inches to 1/2 inches in a single tool, reducing the need for bit changes on the job. Four spiral flutes clear chips quickly and reduce heat buildup during cutting. A self-starting split point eliminates the need for a center punch on most surfaces. The 1/4 inches hex shank seats directly into standard impact drivers and drill/drivers, making it a practical choice for sheet metal and structural work in the field.
This step drill bit is suited for electricians, plumbers, HVAC technicians, and other trades that regularly cut holes through sheet metal, steel panels, electrical enclosures, and junction boxes. It handles stainless steel, mild steel, sheet metal, and plastics. The 13-step range allows a single bit to produce multiple finished hole sizes without swapping tools, which is useful on service calls and panel work where speed and accuracy both matter.
Designed as an OEM-style step drill replacement suitable for use with any tool accepting a standard 1/4 inches hex shank, including impact drivers and keyless chuck drill/drivers used in electrical, HVAC, and plumbing rough-in work.
Step drill bits of this type are typically used by licensed electricians, HVAC technicians, and plumbers during rough-in or service work. Secure the workpiece before drilling and use appropriate eye and hand protection. Start at a lower speed setting when cutting stainless steel to prevent work hardening and premature tip wear. Ensure the hex shank is fully seated and locked in the chuck or impact driver collet before use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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