SKU: 73788760935

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

Sale price$42.76 Regular price$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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4.4 ★★★★★
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Jerry
Lexington, US
★★★★★ 5
A perfect white work shirt.
Fit Type: Regular Fit, Color: White, Size: Medium
Thick, durable, iron exquisitely and the fit is spot on. Perfect white work shirt. I have a grey shirt too, the quality is the same.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026
B
Verified Purchase
Blusher
Carnegie, US
★★★★★ 3
Right fit
I love this shirt it was nice and bright when I got it after a few wash it started to fade out a bit was a perfect fit for a medium built person 5’7 I still would recommend this product they are really nice and thick
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Reviewed in the United States on September 14, 2025
L
Verified Purchase
Linda Mokkosian
Los Angeles, US
★★★★★ 5
Excellent value and has saved me from the sun!
Fit Type: Regular Fit, Color: White, Size: Large
I ordered this large mans shirt because it was 100% cotton and long sleeve. I am a woman and use it to protect myself from the sun walking my dog, very stiff at first, but comes out with several washes. I love the shirt!
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Reviewed in the United States on June 9, 2026
W
Verified Purchase
Wilf
Houston, US
★★★★★ 4
NICE Shirt that SHRINKS!!
Fit Type: Regular Fit, Color: Blue, Size: X-Large
Loved this shirt right out of the package. Put a little steam pressing on it and it was perfect. Has a thicker softer feel than most casual dress shirts. Ordered XL with the "regular" fit and it could be worn tucked or out without it looking overly blousy. SADLY, after a first wash on cold and tumble dry low, and pulled it out early and it shrunk by almost a full size!!! The sleeves, length of shirt and overall fittage shrunk so that now it fits like a snug large. I've never had a shirt shrink like this, hence, the one star off. I would have given it 2 stars off, but the original quality of the shirt is nice, just beware of the shrinkage factor. Don't put it in the dryer at all, only air dry it. I'm tempted to reorder another but just then never put it in the dryer.
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Reviewed in the United States on May 23, 2026
C
Verified Purchase
Cartripa
Lake Worth, US
★★★★★ 5
nice fit
I am thoroughly impressed with this Amazon Essentials white shirt. For the price, the quality is outstanding. The fabric feels soft, breathable, and has a good weight to it
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Reviewed in the United States on June 12, 2026

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