Key Features
1-1/8 Inch Size This DeWalt combination wrench is sized for larger SAE fasteners. The 29 millimeter equivalent makes it easier to match up when you’re working across mixed-size reference charts. 15 Degree Offset The offset box end helps you get wrench swing where a flat profile can fight for clearance. That matters when fasteners sit close to brackets, housings, or other hard parts. 12-Point Box End The 12-point end gives you more positions to engage the fastener, which helps when you do not have much room to reposition the wrench between turns.
Overview
The DeWalt DWMT75188OSP 1-1/8-In. (29mm) Combination Wrench is an individual SAE hand wrench built for turning larger hex fasteners with either an open end or a box end. This is a combination wrench designed for fastening and mechanical service work. Model Number: DWMT75188OSP. If you need one specific large-size wrench instead of buying a full wrench set, this is the straightforward way to fill that gap in a truck box, shop drawer, or service cart.
At the working end, DeWalt gives you a standard combination layout: one open end for quick access and one 12-point box end for more placement options on the fastener. That 12-point pattern matters in tighter spots because it lets you engage the hardware with less handle repositioning. On jobs where you only get a few degrees of swing before hitting a frame rail, bracket, or machine housing, that is a practical advantage.
The listed 15 degree offset helps the box end sit up off the work surface, which can make a real difference around recessed nuts and bolts or when your knuckles need a little more clearance. It is a simple design detail, but it is one of the things that separates a usable mechanic’s wrench from a flat wrench that slows you down every time space gets tight.
This DeWalt wrench uses the SAE measurement system and comes in a 1-1/8 inch size, which DeWalt also notes as 29 millimeters. That sizing is useful for buyers who cross-reference fasteners by both imperial and metric equivalents during equipment repair, automotive work, and general shop maintenance. It is sold as an individual piece, so it makes sense for replacing a lost wrench, adding a less common large size to an existing set, or building a custom service kit around the sizes you actually use.
Because this is a hand tool, there is nothing complicated about setup, charging, or platform compatibility. What matters here is access, fit, and having the right size when the fastener calls for it. The long, slim wrench format shown by the product design is exactly what most users want for reaching into engine bays, around suspension hardware, or into machine assemblies without dragging a bulkier tool into the job.
Who should buy it? Mechanics, equipment techs, maintenance crews, and serious DIY users who work on larger SAE hardware and want a dedicated 1-1/8 inch combination wrench from a known tool brand. If that size comes up often enough in your work, buying the exact wrench you need is usually the smarter move than digging through adapters, adjustable wrenches, or incomplete sets.
Direct Access for Large Fasteners
When the job calls for a large SAE wrench, the right dedicated size saves time and saves fasteners. This combination wrench gives you both quick access with the open end and stronger seated contact with the box end.
- 1-1/8 inch SAE wrench size, also referenced as 29 millimeters
- 15 degree offset and 12-point box end help when working in tighter clearance areas
What’s in the Box
- (1) DeWalt DWMT75188OSP 1-1/8-Inch (29mm) SAE Combination Wrench
Key Specifications
| Tool Type | Combination Wrench |
|---|---|
| Size | 1-1/8 in |
| Metric Equivalent | 29 mm |
| Measurement System | SAE |
| Box End Style | 12-Point |
| Offset Angle | 15 degrees |
| Individual or Set | Individual |
| Piece Count | 1 |
Built For
Automotive Equipment Maintenance Mechanical Service General Shop Work DIY / Hobbyist
Common Questions
- Is this a set or a single wrench? It is an individual wrench with a piece count of 1.
- What size fastener is it made for? This wrench is sized at 1-1/8 inch SAE, which DeWalt also lists as 29 millimeters.
- Does it have a box end and an open end? Yes. It is a combination wrench, so it includes one open end and one box end.
- What style is the box end? The box end is a 12-point design.
Tool Nut’s Take
Tool Nut’s Take
DeWalt DWMT75188OSP 1-1/8-In. (29mm) Combination Wrench for the Size You Never Want to Fake
This is the kind of wrench you buy when an adjustable has already wasted enough of your time.
- Who it’s for: Mechanics, maintenance techs, and anyone who regularly runs into larger 1-1/8 inch SAE fasteners.
- Why it stands out: The 12-point box end and 15 degree offset make it more useful in cramped working areas than a basic flat wrench.
- Worth knowing: This is a single wrench, not a set, and that is actually the point if you just need to fill one missing size in your lineup.
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