Professional-grade 7-8mm metric double-end flare nut wrench with Flank Drive® technology providing 15-20% more turning power, heat-treated alloy steel construction, and nickel-chrome plating for corrosion resistance.
The Snap-on 7-8mm 6-Point Metric Flank Drive Double End Flare Nut Wrench (Model RXFMS78B) is a premium precision tool engineered for professional mechanics and technicians working with metric fasteners. This double-ended wrench features the revolutionary Flank Drive® system that grips the fastener flats, delivering up to 15-20% more turning power compared to conventional wrenches. Manufactured from special alloy steel and heat-treated to exacting standards, this wrench provides optimum strength and durability for demanding industrial applications.
The wrench incorporates a continuous arc design that distributes stress evenly across the entire wrench opening radius, ensuring greater strength and extended tool life. The 6-point configuration provides superior grip on metric fasteners while minimizing the risk of rounding or stripping. With an overall length of 123mm and dimensions optimized for comfort and balance, this tool is ideal for aviation, aerospace, automotive, and general industrial maintenance work.
Feature a tough, durable nickel-chrome plating that produces a mirror-like finish, protecting against corrosion and enabling easy cleaning. Compliant with ASME B107.100 standards, this professional-grade wrench is built to withstand the rigors of daily use in demanding work environments. The double-end design with 7mm and 8mm sizes provides versatility for multiple fastener applications, making it an essential addition to any professional tool collection.
Key Features
- Flank Drive® system provides up to 15-20% more turning power than conventional wrenches
- Special alloy steel construction with heat-treatment for superior strength and durability
- Continuous arc design distributes stress evenly across entire wrench opening radius
- Tough nickel-chrome plating with mirror-like finish protects against corrosion
- Double-end design with 7mm and 8mm sizes for versatile fastener applications
- 6-point configuration minimizes fastener rounding and stripping risks
- Optimized dimensions for superior comfort and balance during extended use
- ASME B107.100 compliant professional-grade tool
Technical Specifications
| Specification |
Value |
| Model | RXFMS78B |
| Size (Metric) | 7-8 mm |
| Style | 6-Point |
| Overall Length | 123 mm |
| Outside Diameter (Dimension A-B) | 15-17 mm |
| Head Depth (Dimension C-D) | 6-7 mm |
| Finish | Chrome (Nickel-Chrome Plating) |
| Material | Special Alloy Steel, Heat-Treated |
| Design Type | Double End Flare Nut Wrench |
| Standards Compliance | ASME B107.100 |
| Drive System | Flank Drive® |
| Turning Power Advantage | 15-20% more than conventional wrenches |
