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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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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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 ★★★★★
Based on 29 reviews
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Filipe
Pawtucket, US
★★★★★ 5
Good fit! amazing shirt! make you look great!
Color: Black-block, Size: X-Large
Shirt are highly regarded for their fit, comfort, and style, making them an excellent choice for summer wear. Many customers highlight the shirts' lightweight and breathable fabric, which keeps them cool and comfortable in warmer weather. The fit is generally true to size, with a flattering cut that works well for both casual outings and semi-formal occasions, adding to their versatility. The shirt are praised for their softness and textured appearance, contributing to an overall stylish look. Customers appreciate their modern design, noting that they look sharp and are suitable for various settings. The value for money is another strong point, as most find the shirt to be reasonably priced given their style and quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 18, 2025
S
Verified Purchase
SM
Pawtucket, US
★★★★★ 5
COOFANDY Men’s Flannel Shirt Jacket
Color: Khaki, Size: Medium
The material has a soft, cozy texture that offers good warmth without being too heavy, haven't washed it yet, but don't think it will shrink, easy to wash, doesn't wrinkle. The size fits comfortably, giving a relaxed but stylish look perfect for layering. Despite being lightweight, it feels very well-made and durable for long-term use. Great comfort, great style, and solid quality overall.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
B
Verified Purchase
Bill
Omaha, US
★★★★★ 5
Quality.
Color: Light Blue, Size: X-Large
Fit great love the color warm and soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
C
Verified Purchase
CATHERINE CABASSA
Los Angeles, US
★★★★★ 4
Looks great buy too short
Color: Red, Size: 4X-Large
Purchased for my son for a Christmas event at his job. He is 330pds and 6ft tall so I got the 4xl for him. It's fits perfectly in width BUT it's short. I know because he is tall I should have searched for a 4XLT but could not find one in the colors needed. But I purchased a white 4xlt tee for him to wear underneath and leave the shirt open it's looks great. So great shirt comfy and cozy well made and colors exactly as shown but if you are on the taller side maybe wear it as an over shirt with a tee underneath.
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Reviewed in the United States on December 15, 2025
K
Verified Purchase
Kamohomoho
Fort Morgan, US
★★★★★ 5
Well made, warm.
Color: Brown, Size: X-Large
A heavy yet soft flannel shirt. Nice on a foggy or light misty day. Flannel is a bit loosely woven but well sewn. Size reflects its lable. Its become a 'got to' shirt this fall.
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Reviewed in the United States on January 9, 2026

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