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Deal.ai › Craftsman › Tool Kits
Craftsman
Craftsman 308 Piece Mechanics Set CMMT45939

Craftsman 308 Piece Mechanics Set CMMT45939

Best price now

$335.00at Ace HardwareChecked 7 h ago

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Price facts

  • Lowest price today: $335.00 at Ace Hardware (checked Nov 11, 2026).

Our take on the Craftsman 308 Piece Mechanics Set CMMT45939

The Craftsman CMMT45939 is a 308-piece mechanics tool set built around three ratchets: 1/4, 3/8 and 1/2 inch drive. All three use a 72-tooth mechanism, so each click needs only a 5-degree swing, which helps in tight engine bays. It covers metric and SAE sockets in 6- and 12-point, plus wrenches, extensions, specialty bits and plastic trays for organization. Full-polish chrome resists rust. It suits home mechanics and DIYers who want one broad kit rather than buying sockets piece by piece, and it competes with big-box sets from GearWrench and Husky that offer similar piece counts but often fewer drive sizes in one case.

Best forHome mechanics building a first full tool kitDIYers doing brakes, suspension and engine workOwners who want metric and SAE in one caseGarage and shop use where trays keep tools sorted
Pros
  • Three ratchet drive sizes in one set
  • 72-tooth ratchets need only a 5-degree swing
  • Metric and SAE, 6- and 12-point coverage
  • Full-polish chrome resists rust and corrosion
  • Plastic trays keep sockets sorted by size
Cons
  • Large, heavy case takes up bench or trunk space
  • Plastic trays are less durable than metal rails
  • No deep sockets in every size
  • Piece count includes many small bits

Craftsman 308 Piece Mechanics Set CMMT45939 prices at every store

  • Ace HardwareNew

    In stock

    $335.00Free shippingChecked 7 h ago
    Visit Ace Hardware

Store links may earn us a commission. Price via Klarna.

Craftsman 308 Piece Mechanics Set CMMT45939 price history

Lowest price we've seen: $335.00 on Nov 11 at Ace Hardware. Tracked across 1 store since Nov 11.

What reviewers say

Buyers rate the set highly, with 4.8 out of 5 across 44 reviews. Owners like the range of sockets and the smooth, fine-tooth ratchets. Complaints are few and mostly about the bulk of the case and the plastic trays.

What people mention
  • Ratchet actionPraisedOwners say the 72-tooth ratchets turn smoothly and the 5-degree swing helps in cramped spaces.
  • CoveragePraisedBuyers like having 1/4, 3/8 and 1/2 inch drive sockets plus metric and SAE in one set.
  • BuildPraisedThe full-polish chrome is reported to hold up against rust and wear.
  • Storage traysMixedTrays keep sizes organized, but some owners find the plastic less sturdy than metal rails.
  • Case sizeCriticisedThe case is bulky and heavy, which makes it awkward to carry or store.

From Ace Hardware

  • 72-tooth 1/4 in., 3/8 in. and 1/2 in. drive ratchets produce a 5 degree arc swing
  • Comprehensive set of 1/4 in., 3/8 in. and 1/2 in. drive ratchets, sockets, wrenches, drive tool accessories and specialty bits
  • Tools organized on plastic trays for organization and storage
  • Full polish chrome for rust and corrosion resistance
  • Metric and SAE 6 and 12 point
  • 308 pieces
Guarantee
Full lifetime warranty
Shipping
Ships to store for pickup free; delivery available
In the box
1/4 in., 3/8 in. and 1/2 in. drive ratchets, Sockets, Wrenches, Drive tool accessories, Specialty bits, Plastic organization trays

About the Craftsman 308 Piece Mechanics Set CMMT45939

This 308-piece mechanics set includes ratchets, sockets, wrenches, drive tool accessories and specialty bits. The ratchets come in 1/4 in., 3/8 in. and 1/2 in. drive sizes.

The 72-tooth ratchets produce a 5 degree arc swing. The tools have a full polish chrome finish for rust and corrosion resistance. Sockets are available in metric and SAE sizes, in 6 and 12 point.

The tools are organized on plastic trays for storage.

Piece count
308 pieces
Drive sizes
1/4 in., 3/8 in. and 1/2 in.
Ratchet
72 teeth, 5 degree arc swing
Measurements
Metric and SAE
Socket points
6 and 12 point
Finish
Full polish chrome
Storage
Plastic organization trays
In the box
Ratchets, sockets, wrenches, drive tool accessories, specialty bits, plastic trays

What buyers say

Buyers like
  • Rated 4.8 out of 5 from 44 reviews

Questions and answers

Does it include both metric and SAE sockets?
Yes. The set covers metric and SAE in 6- and 12-point sockets across the three drive sizes.
What ratchet sizes come in the box?
You get 1/4, 3/8 and 1/2 inch drive ratchets, all with 72 teeth and a 5-degree arc swing.
Are deep sockets included?
The set is mostly standard-depth sockets. Deep sockets are not covered in every size, so check the piece list if you need them.
Is it a good first mechanics set?
Yes for most home jobs. It covers the common drive sizes and both measurement systems, so you can add specialty tools later instead of buying sockets one at a time.
How does it compare with GearWrench or Husky sets?
It matches them on piece count and adds three ratchet drive sizes in one case. Those rivals often have fewer drive sizes but may offer more deep sockets or metal storage.
Does it come with a case?
Yes. The tools sit in plastic organization trays, which fit into the set's case.
Where is the Craftsman 308 Piece Mechanics Set CMMT45939 cheapest?
At Ace Hardware, for $335.00, as of our latest check.
What do buyers say about the Craftsman 308 Piece Mechanics Set CMMT45939?
Buyers like: Rated 4.8 out of 5 from 44 reviews.

Stores we've priced the Craftsman 308 Piece Mechanics Set CMMT45939 at

  • Ace Hardware deals and prices

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