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Wera 6004 Joker M Self-Setting Adjustable Spanner 13-16mm x 188mm

#1 in sales
£64.07

Length: 18.8 cm

11.7 cm
15.4 cm
18.8 cm

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Product information

Description

General description

The Wera 6004 Joker M (part no. 05020103001) is a high-performance self-adjusting open-end wrench designed to cover hex sizes from 13 to 16 mm (1/2'–5/8'). Its intelligent jaw design allows for automatic adaptation to different bolt sizes without manual adjustments, ensuring fast, safe, and slip-free work even in confined spaces.

Technical specifications

  • Jaw capacity: 13–16 mm / 1/2'–5/8'
  • Length: 188 mm
  • Weight: 239 g
  • Self-adjusting jaws: Parallel jaws automatically grip hex nuts and bolts
  • Ratchet mechanism: Enables continuous fastening without removing the wrench
  • Return angle: Only 30°, thanks to internal prism geometry
  • Smooth jaws: Prevent rounding of fasteners, ensuring secure torque transmission
  • Hanging hole: For organized wall storage
  • Country of origin: Czech Republic

    • Usage

    Ideal for mechanics, HVAC installers, and field engineers, the Joker 6004 M replaces multiple conventional wrench sizes. It provides a firm, anti-slip grip and significantly reduces the risk of rounding bolt heads. With its integrated ratchet function and compact design, it allows efficient, fatigue-free work even in tight areas. Perfect for a wide range of maintenance and assembly tasks involving standard metric and imperial fasteners, it is well-suited for automotive work, machinery setups, plumbing, and electrical installation.

    Features

    • Brand
      WERA
    • Length
      18.8 cm
    • Pcs per pack
      1
    • Warranty
      3 year(s)
    • Origin
      Made in the Czech Republic
    • Head type
      Hexagonal
    • Tilt angle
      30 °
    • Handle feature
      Self-adjusting
    • Reversible ratchet
      Yes
    • Product finish
      Untreated
    • Material
      Steel
    • Weight
      239 g
    • Power
      35 W
    • Voltage
      5 V
    • Wrench type
      Open ended spanner
    • Type of packaging
      Unit
    • Wrench usage(s)
      General purpose
    • ManoMano Reference
      ME60205377
    • MMID
      567154144613
    • Product code
      05020103001
    • EAN
      4013288216908

    Customer reviews

    4,6
    / 18 Reviews
    Reviews verified by ManoMano
    MManoMano Customer
    Published on 25/02/2026, United Kingdom

    .

    TThomas
    Pro Customer
    Published on 14/04/2025, Germany

    Just like the little keys.

    MManoMano Customer
    Published on 30/11/2024, Germany

    Very satisfied

    MManoMano Customer
    Published on 13/02/2024, Germany

    Great key

    HHorst
    Published on 16/01/2023, Germany

    Ideal for small tool boxes with just a few tools that can be used very universally and flexibly. The Wera Joker is not cheap, but it is good value, replaces several open-end wrenches and is also suitable for screws in between sizes. I often use it for bicycle repairs on ice.

    1 person found this helpful
    DDaniel
    Published on 25/02/2022, Spain

    Simply Wera, unique and quality brand

    1 person found this helpful
    Spanner and socket set buying guide
    Advice

    Spanner and socket set buying guide

    Read our guide
    WERAVisit the WERA store
    We firmly believe that our tools make our users' lives easier, safer and "full of joy". We are never satisfied with existing standards. There are many screwdriving tools. But unlike others, we don't believe that tools have been invented to the end. We are constantly looking for new ideas. We think differently. We question. And in doing so, we develop screwdriving tools such as the Zyklop ratchet or the Joker open-end spanner that turn the tried and tested on its head. With over 3,000 different tools to choose from, we are sure to have the right tool for you. 750 Wera Tool Rebels have fun reinventing screwdriving tools every day and working on solutions for you.

 We love innovation. We love design. We love rock 'n' roll.
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    More than 7 million individual and professional customers