CRAFTSMAN CMMT12121 Mechanics Tool Set 83 Piece
- Measurement Standard: Metric, SAE
- Head Style: Fixed Square, Hex
- Item Length: 17 inches
- Operation Mode: Mechanical
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Worth choosing if you specifically need Craftsman's extra 17 inch reach for leverage, though the listing leaves drive size and jaw type unconfirmed.
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ASIN: B0CYDZCGS8Model: CMMT12121Category: Wrenches
Overview
The Craftsman CMMT12121 is a 17 inch wrench, longer than typical hand wrenches, built for extra leverage on stubborn fasteners. Beyond length, the listing does not specify drive size, jaw type or finish.
Length is the standout number here, and it is worth taking at face value rather than assuming a specific jaw or drive configuration the listing never states. Check that spec against your fastener before ordering.
- 17 inch overall length
- Craftsman branded
Who it's for
Suits anyone working large or seized fasteners who needs more leverage than a standard wrench provides. Not suited to tight engine bays or confined spaces where a 17 inch tool can't swing freely.
Pros and cons
- 17 inch length gives extra leverage
- Craftsman brand reliability
- Listing omits drive size, jaw type or finish
- Length makes it unsuitable for tight spaces
Performance notes
Length is the main lever here: at 17 inches the tool trades compactness for torque, helping break loose fasteners that resist shorter wrenches. The listing stops short of naming jaw type or drive size, so matching it to your exact fastener is on the buyer.
Specifications
| Brand | Craftsman |
|---|---|
| Model | CMMT12121 |
| Dimensions & fit | |
| Item Length | 17 incheshigher than 87% of 371 wrenches |
| Construction & materials | |
| Material Type | Metal |
| Finish Types | Polished |
| Included components | |
| Package Quantity | 1 |
| Unit Count | 1 |
| Included Components | (10) Specialty Bits, (16) Hex Keys, (2) Ratchets, (5) Accessories, (50) Sockets |
| Other details | |
| Measurement Standard | Metric, SAE |
| Head Style | Fixed Square, Hex |
| Operation Mode | Mechanical |
| Item Type Name | Sockets & Ratchets |
| Set Name | CRAFTSMAN Mechanics Tool Set |
Closest rivals on specs
Frequently asked questions
How long is the Craftsman CMMT12121 wrench?
17 inches.
Does the Craftsman CMMT12121 work in tight spaces?
Its 17 inch length is built for leverage rather than maneuvering in cramped clearances.