Wera 05020172001 7880 Joker XL llave de boca autoajustable de inserción, accionamiento 9x12 mm, 10-19 mm

Self-setting insert open-end wrench from the Wera Joker XL series, engineered for automatic and continuous gripping of hexagon screw heads and nuts. The parallel jaws adapt to the fastener size, providing a secure hold without manual adjustment.

Advantages

The self-setting mechanism allows the wrench to grip fasteners automatically, saving time during repetitive tasks. The integrated limit stop prevents slipping, enhancing safety and reducing the risk of damaging the fastener or surrounding components. The low return angle of 30° enables efficient ratcheting in tight spaces. The nickel-chrome plated chrome-molybdenum steel construction offers durability and corrosion resistance.

Suitable for

• Hexagon screw heads and nuts
• Metric sizes from 10 to 19 mm
• Imperial sizes from 7/16" to 3/4"
• Use with Wera 9x12 mm insert tool holders or handles

Key specifications

• Tool type: Self-setting insert open-end wrench
• Drive type: Square drive
• Drive size: 9 x 12 mm
• Wrench size range: 10 - 19 mm (metric), 7/16" - 3/4" (imperial)
• Gripping mechanism: Self-setting, automatic and continuous
• Ratcheting function: Yes, with low return angle of 30°
• Material: Chrome-molybdenum steel
• Surface finish: Nickel-chrome plated
• Jaw design: Parallel jaws for surface-friendly gripping
• Safety feature: Integrated limit stop to prevent slipping
• Head thickness: 15 mm
• Number of jaws: 2

Recommendations

For optimal performance, pair this insert wrench with a compatible Wera 9x12 mm insert tool holder or handle. The self-setting feature is particularly useful for applications with varying fastener sizes, reducing tool changes and improving workflow.