Step Drill Bit 7/8 to 1-1/8 in Quick Release Hex Shank - Fast Cuts

In this review the Klein Tools QRST11 step drill bit is evaluated for electricians, metalworkers, and DIYers who need clean holes in thin metal and common shop materials. The bottom line: this bit stands out for fast, stable drilling and long life thanks to its aluminum titanium nitride coating, and the quick-release 1/4-in hex shank makes it especially convenient when switching between an impact driver and a drill. It is best for tasks that require precise stepped holes from 7/8 in to 1-1/8 in without changing bits.

Key Features

• Durable coating: The aluminum titanium nitride finish offers much greater wear resistance than black oxide, extending the bit life during repetitive metal work.
• Impact rated: Designed to be used with both impact drivers and standard drills so it adapts to different jobsite tools and conditions.
• Dual spiral flute: The double-fluted spiral design clears chips quickly to keep cutting smooth and reduce heat buildup for faster cuts.
• Clear laser markings: Laser-etched size indicators make it easy to identify the two hole sizes at a glance, improving accuracy and speed on the job.
• Fast-start tip: The short, aggressive tip helps prevent walking for precise, centered starts even on thin sheet materials.
• Quick-release hex shank: The 1/4-in hex shank with quick-release holds securely in chucks and prevents spinning under torque.

Who It's For

The QRST11 is aimed at professionals and serious hobbyists who regularly cut holes in sheet steel up to 16 gauge, electrical boxes, aluminum, plastic and wood. Its combination of a robust coating and impact compatibility makes it suited to repetitive work where bit longevity and reliable starts matter.

It is less appropriate for heavy-duty thick plate drilling or precision machine-shop work where dedicated step dies or larger solid drill setups are required; users who need dozens of different hole diameters or extremely fine tolerances should consider other specialist tooling.

Pros & Cons

Pros

• Excellent wear resistance from the aluminum titanium nitride coating for longer service life.
• Quick chip removal and faster cutting courtesy of the dual spiral flute design.
• Secure quick-release 1/4-in hex shank works well with both impact drivers and drills.
• Laser size markings and a fast-start tip help deliver accurate, clean holes with minimal wandering.

Cons

• Durability and sharpness reports are mixed among users, so heavy, continuous use may eventually dull the tip and require regrinding or replacement.
• Designed for thinner materials up to 16 gauge steel; not intended for thick plate or heavy structural steel.

Specifications

Brand	Klein Tools
Model	QRST11 step drill bit
Range	7/8 in to 1-1/8 in
Shank	1/4-in hex quick-release
Coating	Aluminum titanium nitride
Compatible materials	Steel up to 16 gauge, wood, plastic, aluminum
Flute design	Dual spiral double-fluted

Our Verdict

The QRST11 is a practical, value-oriented step drill for electricians, maintenance techs and metalworkers who need reliable, fast holes in thin materials. Its durable coating, quick-release hex shank, and chip-clearing spiral flutes deliver cleaner cuts and longer life than basic step bits, making it a smart purchase for regular shop or field use where stepped hole sizing and impact compatibility matter.

Frequently Asked Questions

Can this bit be used in an impact driver?
Yes, it is impact rated and the 1/4-in hex shank is made to work with impact drivers as well as standard drills.

What materials will it cut effectively?
It is suitable for steel up to 16 gauge, aluminum, wood and plastic; it is not intended for thick or structural steel plate.

How are hole sizes identified?
Two hole sizes are laser-etched on the bit for quick identification during work.