SKU: 73788760935

Irwin Tools 15101 Unibit1T Titanium Nitride Coated 1/8-Inch to 1/2-Inch by 1/4-Inch Shank Step Drill Bit

$42.76 $47.51
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Description

Irwin Tools 15101 Unibit1T Titanium Nitride Coated 1/8-Inch to 1/2-Inch by 1/4-Inch Shank Step Drill BitStep Drill Bit, Material HSS, Titanium Nitride Finish, Number of Hole Sizes 13, Shank Size 1 4 In., Step Thickness 1 32 In., Size Range 1 8 In. to 1 2 In., Sizes Included 1 8 In., 5 32 In., 3 16 In., 7 32 In., 1 4 In., 9 32 In., 5 16 In., 11 32 In., 3 8 In., 13 32 In., 7 16 In., 15 32 In., 1 2 In., Number of Flutes 1, Shank Type Hex, Bit Length 3 1 8 In. UNIBIT 1T 13 Hole Sizes (1 8" 1 2"), 1 32" Increments Features Ideal for drilling holes into thin

Step Drill Bit, Material HSS, Titanium Nitride Finish, Number of Hole Sizes 13, Shank Size 1/4 In., Step Thickness 1/32 In., Size Range 1/8 In. to 1/2 In., Sizes Included 1/8 In., 5/32 In., 3/16 In., 7/32 In., 1/4 In., 9/32 In., 5/16 In., 11/32 In., 3/8 In., 13/32 In., 7/16 In., 15/32 In., 1/2 In., Number of Flutes 1, Shank Type Hex, Bit Length 3-1/8 In. UNIBIT 1T 13 Hole Sizes (1/8"-1/2"), 1/32" Increments

Features

  • Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates

  • Single-flute cutting edge for greater control through steps

  • 3 flatted shank prevents slipping in drill chuck

  • New SpeedPoint tip penetrates faster than previous Unibits and prevents walking

Specifications

Is Discontinued By Manufacturer : No

Product Dimensions : 5.5 x 2.51 x 0.4 inches; 0.35 Ounces

Item model number : 15101ZR

Date First Available : November 9, 2004

Manufacturer : IRWIN

ASIN : B0002NYBLO

Domestic Shipping : Item can be shipped within U.S.

International Shipping : This item can be shipped to select countries outside of the U.S. Learn More

Best Sellers Rank : #248,592 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #326 in Step Drill Bits

Customer Reviews : 4.3 out of 5 stars 10 ratings

Material : High Speed Steel

Brand : Irwin Tools

Item Dimensions LxWxH : 5.5 x 2.51 x 0.4 inches

Shank Type : Round With Flats

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 73788760935

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4.6 ★★★★★
Based on 25 reviews
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Product Reviews
J
Verified Purchase
John D.
Lowell, US
★★★★★ 5
Office‑grade, solid, fast, and capable.
I didn’t just buy a different printer — I moved up a class. Compared to my Canon PIXMA: I feel about the Epson WF 4834 the way someone feels when they finally replace a flimsy folding chair with an actual piece of furniture. The difference isn’t subtle — it’s structural. Price is awesome. I’m getting my money’s worth and more. Solid machine. Super easy to install on my network. Wireless connection is great! I print from different rooms all the time. Print quality is outstanding, professional looking. Easy to use, period. So far, I’m not disappointed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 13, 2026
M
Verified Purchase
MsKneeKey
Cuba, US
★★★★★ 4
Great Value! Great Printer
THE ONLY reason I can't give it a five is because it is the only printer I have ever seen with two trays that you have to print one or the other. Aside from that, BEST Scanner App EVER! Easy!! Hardly ever jams and then only when I put too many in, rushing to finish. The quality is fantastic!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
A
Verified Purchase
Amazon Customer
Lexington, US
★★★★★ 5
Quick and easy set up
Quick set up! Easy to pair with cable signal -worked great. Scan/fax/copy. Will see about ink refills when needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
A
Verified Purchase
Atypical Lady
Bozeman, US
★★★★★ 1
Hands down, the WORST printer I have ever owned. In THIRTY years.
I love Epson print quality so when my Epson finally bit the dust I HAD TO have another Epson. After lots of research I bought this one. It takes FOREVER to wake up and print. It shouldn’t take 5 minutes to wake up. I am a VERY light user. At the time of this initial review I'd maybe printed 500 pages total, so it's not like this thing has been put through the ringer or anything. This thing CONSTANTLY jams. Or says it’s jammed. It may or may not be. But you’ll have to go through the motions every time you want to use it anyhow. It burns through ink faster than a cracked out toddler dumping paint all over the floors and walls. WHEN ONE COLOR RUNS OUT YOU CAN NO LONGER PRINT B&W I’m sure there are more reasons why I hate this printer, I’ll try to come back to add them if I think of them. THIS PRINTER HAS INSPIRED ME TO DISASSEMBLE MY OLD EPSON AND BECOME A PRINTER REPAIR TECH IN MY FREE TIME IN HOPES OF GETTING THAT ONE TO WORK. I don’t recommend that route either. I think Epson has lost me forever. All I want is a printer with their great print quality, two paper trays that accept different sizes, and a rear loader for heavier paper, that doesn’t cost an arm and a leg. My old WorkForce did all of that beautifully and for whatever reasons they decided that shouldn’t be an option anymore. RUDE. UPDATE: This pile of junk will ALSO say that it is out of paper when in fact it is not. I hate it, so so so much.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 2, 2022
Y
Verified Purchase
Yikes
Dallas, US
★★★★★ 3
Ink
Buyer beware It works great, but I’ve had it 4 days and already out of black ink and it’s 93 dollars to replace 🙃
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026

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