Description

The WERA 6004 Joker XL Self-Setting Spanner (05020104001) is a revolutionary adjustable wrench that automatically sets itself to the correct jaw width when placed onto a hexagonal bolt or nut — no manual adjustment required. Covering metric sizes 19–24mm in a single tool (equivalent to 3/4″–15/16″ imperial), it replaces four individual spanners, reducing the number of tools that need to be carried and located on site.
The integrated lever mechanism clamps the jaws firmly against the fastener as soon as torque is applied, virtually eliminating the risk of slipping or rounding that affects conventional adjustable wrenches. The built-in ratchet function enables continuous turning in one direction with only a 30° return angle, allowing fast, efficient fastening even in the tightest of access spaces.
At 256mm total length with a 16mm head thickness, the Joker XL is designed for the larger fasteners found in industrial electrical installations, generator sets, and switchgear. Ergonomic 2-component plastic handles with anti-slip protection at the nose end provide comfortable, confident grip during high-torque applications.