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CRAFTSMAN Mechanics Tool Set, 298 Piece Hand Tool and Socket Set SAE/Metric (CMMT12139)

  • Based on 384 reviews
Condition: New
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$279.00 Why this price?
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Apr 20
Order within 13 hours and 55 minutes
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Features

  • LOW PROFILE RATCHET: Up to 25% thinner head* for access in tight spaces (1/4" DR & 3/8" DR only as compared to CMMT81747, CMMT81748, & CMMT81749)
  • 72-TOOTH RATCHET: Delivers 5 degree arc swing
  • ORGANIZATION: Tools packed into plastic trays for organization and storage
  • ALL IN ONE MECHANICS SET: Contains a full assortment of sockets, ratchets, wrenches, and specialty bits for automotive enthusiasts and mechanics
  • CORROSION RESISTANCE: Full Polish Chrome Finish
  • FULL LIFETIME WARRANTY

Description

This all-in-one 298 pc. Mechanics Tool Set comes equipped with 1/4-in., 3/8-in., and 1/2-in. drive improved low profile 72-Tooth ratchets with a 5° arc swing and up to a 25% thinner head that helps deliver greater access in confined spaces. Packed with a comprehensive assortment of 6-point and 12-point sockets, ratcheting wrenches, and drive tool accessories, this set is perfect for automotive and DIY repairs or as a complete starter set. Tools come assembled in plastic trays for easy organization. Proudly backed by a Full Lifetime Warranty. 1/4” DR and 3/8” DR Only As Compared To CMMT81747, CMMT81748, & CMMT81749

Color: Silver


Brand: CRAFTSMAN


Material: Chrome Plated Steel


Item Weight: 43.7 Pounds


Item Package Quantity: 1


Head Style: ratchet, open end, box end


Measurement Standard: SAE


Brand Name: CRAFTSMAN


Model Number: CMMT12139


Manufacturer: CRAFTSMAN


UPC: 885911929059


Global Trade Identification Number: 59


Item Type Name: Sockets & Ratchets


Included Components: (166) Sockets, (23) Wrenches, (29) Accessories, (3) Ratchets, (33) Specialty bits, (44) Hex keys


Unit Count: 1.0 Count


Manufacturer Warranty Description: Full Lifetime Warranty


Item Weight: 43.7 Pounds


Package Quantity: 1


Jaw Capacity: 0.25 Inches


Material Type: Chrome Plated Steel


Color: Silver


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Excellent value for the money and pretty much everything you need.
Style: NEW 298 Piece Set
Fantastic set of tools at a very reasonable price and top quality.
Reviewed in the United States on December 30, 2025 by Jeffrey Smith

  • Craftsman Tools are still good
Style: NEW 298 Piece Set
I have always liked the Craftsman brand for regular mechanics tools. My son needed tools so I gave him all my used ones in perfect condition and then bought me a new set. The tools come in trays that fit right into the drawers of my new top and bottom chest. Why didn't I buy my son the new set you ask? Because he'll lose them and I like the nice new shiny ones. ... show more
Reviewed in the United States on January 25, 2026 by Rich

  • toos
Style: NEW 298 Piece Set
good tools
Reviewed in the United States on February 2, 2026 by Brent Hansen

  • Exelente kit
Style: NEW 298 Piece Set
Es un producto de muy buena calidad
Reviewed in the United States on March 11, 2026 by Dany

  • Great Value Tool Set with Room for Improvement
Style: NEW 298 Piece Set
This tool set offers fantastic value for money and provides a wide range of tools that surpass the ones you may have been accustomed to. While the contrast on the tools could be improved for quicker and easier readability, the overall quality is impressive. Compared to higher-end brands like Milwaukee or SnapOn, this set comes at a much more affordable price point, making it accessible for many users. Despite the minor room for enhancement in terms of contrast, the set's performance and durability make it a worthwhile investment for both DIY enthusiasts and professionals. Highly recommended for those seeking a cost-effective yet reliable tool set for various projects. ... show more
Reviewed in the United States on July 21, 2025 by Ashley Cranney

  • Perfect All-in-One Tool Set!
Style: NEW 298 Piece Set
This CRAFTSMAN 298-piece set is a must-have! Durable, well-organized, and great value with both SAE/Metric sizes. Highly recommended for DIYers and pros alike.
Reviewed in the United States on April 25, 2025 by Leila Arambula

  • Mejor autocle
Style: NEW 298 Piece Set
Es el más completo por las llaves con matraca que hacen más fácil cualquier reparación
Reviewed in the United States on October 20, 2025 by Marcelo Balderrama

  • Y si funciona
Style: NEW 298 Piece Set
Lo compré por los dados Ale
Reviewed in the United States on September 28, 2025 by Amazon Customer

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