Professional-grade 18-21mm metric Flank Drive box wrench with 10° offset, tethering system, and superior turning power for safe working at heights.
The Snap-on Tools@Height 18-21mm 12-Point Metric Flank Drive® 10° Offset Box Wrench is a professional-grade tool designed for working at heights with enhanced safety features. This wrench is engineered with a tethering system that minimizes tool exchanges and reduces the risk of drops, making it an essential tool for aerial work and maintenance tasks. The wrench features a 10° offset handle that provides maximum knuckle clearance and improved access in confined spaces, while the Flank Drive® wrenching system delivers up to 15-20% more turning power compared to standard wrenches, reducing the risk of tool or fastener damage.
Crafted from polished stainless steel, this wrench combines superior flexibility and shock-absorbing qualities with exceptional durability. The nickel-chrome plating produces a mirror-like finish that protects against corrosion and ensures easy cleaning and maintenance. The tool features engineered attachment points that don't interfere with functionality, and the tether slides out of the way along the handle to provide full use and maximum leverage. Sized for optimum comfort and balance, this wrench is ideal for professional technicians working in aviation, aerospace, military, defense, oil and gas, power generation, railroads, and general industry applications.
With a total length of 303mm and weighing only 0.58 lbs (0.26 kg), this wrench offers the perfect balance between reach and maneuverability. The 12-point design ensures compatibility with various fastener types, while the standard offset angle provides ergonomic benefits for extended use. This is a backorder item with an estimated stock date of May 9, 2026.
Key Features
- Snap-on Tools@Height tethering system minimizes tool exchanges and reduces drop risk
- Flank Drive wrenching system provides 15-20% more turning power with less fastener damage
- 10° offset handle for maximum knuckle clearance and improved access in confined spaces
- Polished stainless steel construction with nickel-chrome plating for corrosion protection
- 12-point design with engineered attachment points that don't interfere with tool functionality
Technical Specifications
| Specification |
Value |
| Product Type | 12-Point Metric Flank Drive Box Wrench |
| Size Range | 18-21 mm |
| Total Length | 303 mm |
| Outside Diameter Range | 25.9-29.9 mm |
| Head Depth Range | 11.9-13.3 mm |
| Weight | 0.58 lb (0.26 kg) |
| Material | Polished Stainless Steel |
| Finish | Nickel-Chrome Plating |
| Handle Offset | 10 degrees |
| Attachment System | Tools@Height Tethering System with Engineered Attachment Points |
| SKU | THXBM1821A |
| List Price | $116.50 USD |
| Availability | Backorder - Estimated Stock Date: May 9, 2026 |
