SUNEX 9940M Metric S-Style Wrench Set
- Jaw Capacity: 0.7 inches
- Measurement Standard: Metric
- Head Style: C Shaped
- Item Length: 4.3 inches
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A heavy, single size wrench built for 19mm fasteners, a reasonable pick if that size covers most of the work you do regularly.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B000PGYFL4Model: 9940MCategory: Wrenches
Overview
The Sunex 9940M is a wrench sized for 19mm fasteners, weighing 1.43 pounds, aimed at mechanics and technicians who need a wrench built for that specific bolt size.
Sunex sells mostly to the automotive and heavy equipment trade, and a 1.43 pound wrench for a single 19mm size points to a heavy duty piece rather than a light combination wrench. The listing doesn't specify whether it's open end, box end, or a service style head, so confirm that detail from the product photos before buying.
- 19mm capacity
- 1.43 lb weight
- 11 cm length
- Model 9940M
Who it's for
Fits mechanics and technicians working on fasteners sized to 19mm who want a durable, single purpose wrench. Skip it if you need multiple sizes in one purchase or aren't sure the head style matches your application.
Pros and cons
- Built specifically for 19mm fasteners
- Heavier construction than a standard combination wrench of the same size
- Single size only, no set included
- Head style (box, open, or service) isn't specified in the listing
Performance notes
At 1.43 pounds for a single size, this wrench carries more mass than a typical combination wrench, which usually means thicker steel built to handle higher torque without flexing or rounding the fastener.
Specifications
| Brand | SUNEX |
|---|---|
| Model | 9940M |
| Dimensions & fit | |
| Item Length | 4.3 incheslower than 75% of 371 wrenches |
| Item Weight | 1.43 poundshigher than 52% of 356 wrenches |
| Capacity & performance | |
| Jaw Capacity | 0.7 incheslower than 50% of 165 wrenches |
| Construction & materials | |
| Material Type | Metal |
| Color | Silver |
| Finish Types | Polished |
| Included components | |
| Package Quantity | 1 |
| Unit Count | 1 |
| Included Components | Sunex 9940M Metric S-Style Wrench Set, Fully Polished, 10 X 11mm - 18 X 19mm, 5-Piece |
| Warranty & support | |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Other details | |
| Measurement Standard | Metric |
| Head Style | C Shaped |
| Operation Mode | Mechanical |
| Item Type Name | Sunex 9940M Metric S-Style Wrench Set, Fully Polished, 10 X 11mm - 18 X 19mm, 5-Piece |
| Set Name | SUNEX TOOLS 9940M Metric S-Style Wrench Set |
Closest rivals on specs
WORKPRO 1/4-Inch Drive Mini Socket and Bit Ratchet Set 34 Piece- Item Length 4.3 vs 4.8 inches (-10%)
DURATECH Mini Ratchet and Bit Set 56 Piece- Item Length 4.3 vs 3.8 inches (+13%)
Amazon Basics Folding Hex Key Set 3 Pack- Item Weight 1.43 vs 0.99 pounds (+44%)
Frequently asked questions
What size fastener does the Sunex 9940M fit?
It's sized for 19mm fasteners.
How much does the 9940M weigh?
1.43 pounds.
Is this wrench sold as part of a set?
No, the listing covers a single 19mm wrench.