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Unibor step drill, tapered cone, matte metal finish, impact shank

Unibor

Unibor 06X3/4KOIMP step drill 1/4in-1.1/8in impact shank

SKU CH-TF11-P7BWB

Drills multiple hole sizes from 1/4in to 1.1/8in with an impact-ready shank for fast, clean knock-out cuts

  • Drills multiple hole sizes with one bit
  • Impact-rated shank handles high-torque drivers
  • Knock-out design clears slugs automatically
  • Unibor brand built for trade durability
  • Steps from 1/4 in to 1.1 in diameter

Knock-Out Multicut Impact Shank Step Drill

The Unibor 06X3/4KOIMP step drill covers a range from 1/4 inch to 1.1/8 inches in a single bit. It is designed for electricians and sheet-metal workers who need to enlarge existing holes quickly. The impact-rated shank allows use with high-torque drivers without slippage.

Thermals noise and power draw in normal use

The stepped cutting geometry reduces friction and heat build-up during extended drilling sessions. Lower cutting forces mean the driver motor runs cooler and draws less current. Vibration is minimised, resulting in quieter operation compared with standard twist bits.

What the bundled accessories

The knock-out design lets each step deburr the hole as it cuts, removing the need for a separate finishing tool. This single-bit approach saves time on panel work and reduces the number of bits carried on the job. No additional accessories or software are included.

How it compares

Measured against everything we stock in Power Drills, Drivers & Cutting Bits, at today’s prices. Recalculated every night.

Price $43.99
Cheaper than about 65% of the 2,412 comparable items (median $81.99).

Specifications

Product
Brand nameUNIBOR

Questions about this item

How do I fit the impact shank into my driver and what is the step people miss?

Insert the 1/4in hex shank fully into the impact driver chuck until it locks; the step often missed is not seating it completely, which causes wobble and premature wear.

What part of this step drill will need replacement first?

The cutting edges on each of the 6 step diameters dull with use; once they no longer cut cleanly the whole drill must be replaced.

What limit appears first when drilling thicker material continuously?

Heat builds up in the high-speed steel body during sustained cutting, reducing edge hardness and forcing you to pause for cooling.

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