Professional-grade 9 and 11 mm dual-size metric ratcheting box wrench with 180° flexible head, Flank Drive technology, and 72-tooth gear for superior access and 15-20% more turning power in confined spaces.
The Snap-on 9 and 11 mm 12-Point Metric Flank Drive Double Flex Ratcheting Box Wrench (Model XFRM911A) represents the pinnacle of professional-grade wrench engineering, designed specifically for demanding automotive, aerospace, and industrial applications. This dual-size wrench combines cutting-edge ratcheting technology with exceptional versatility, allowing technicians to work efficiently with both 9 mm and 11 mm fasteners using a single tool. The innovative 180° flexible ratcheting head, combined with the narrow width and low-height profile of the wrench head, enables unprecedented access into the tightest spaces where conventional wrenches simply cannot reach.
Engineered with Snap-on's proprietary Flank Drive box-end system, this wrench grips fastener flats to deliver up to 15-20% more turning power compared to traditional wrenches, while simultaneously reducing the risk of fastener damage and stripping. The yoke/tang combination utilizes well-established Snap-on flex ratchet design principles to ensure ultimate strength and durability under the most demanding working conditions. The unique, patented ratcheting gear design features a 72-tooth mechanism that incorporates key elements of Snap-on's renowned Dual 80 Technology, effectively minimizing swing arc requirements when working in restricted or confined spaces.
The wrench features a professional nickel-chrome finish that provides superior corrosion resistance and makes routine cleaning and maintenance effortless. At 365 mm in overall length with precisely engineered head dimensions (18 mm width at dimension A, 21 mm at dimension B, and 7-8 mm depth), this tool delivers the perfect balance of accessibility, control, and performance. Whether you're a master technician, aircraft maintenance professional, or fleet maintenance specialist, this Snap-on ratcheting box wrench is an indispensable addition to your professional tool collection.
Key Features
- 180° flexible ratcheting head enables access to tight spaces and confined areas
- Flank Drive box-end system delivers 15-20% more turning power with reduced fastener damage
- 72-tooth ratcheting gear with Dual 80 Technology minimizes swing arc in restricted spaces
- Dual-size design handles both 9 mm and 11 mm metric fasteners with single tool
- Nickel-chrome finish provides corrosion resistance and easy maintenance
- Yoke/tang combination ensures ultimate strength and durability for professional use
- Narrow width and low-height profile optimize access and control
- Patented ratcheting gear design maximizes strength and balanced performance
Technical Specifications
| Specification |
Value |
| SKU | XFRM911A |
| Size Range | 9 and 11 mm |
| Style | 12-Point |
| Head Width (Dimension A) | 18 mm |
| Head Width (Dimension B) | 21 mm |
| Head Depth (Dimension C) | 7 mm |
| Head Depth (Dimension D) | 8 mm |
| Overall Length | 365 mm |
| Finish | Nickel-Chrome |
| Ratcheting Gear | 72-tooth with Dual 80 Technology |
| Ratcheting Arc | 180° flexible head |
| Box-End System | Flank Drive with 15-20% more turning power |
| Design Type | Double Flex Ratcheting Box Wrench |
| Yoke/Tang Design | Snap-on flex ratchet design for ultimate strength and durability |
| List Price | $107.50 |
