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Medium. 13-16mm in metric and 1/2" to 5/8" in US sizes. Mouth width 12.4mm, overall length 190mm. VDE (Verein Deutsche Elektriker) insulated self setting spanners. Individually tested at 10.000 Volts, in accordance with IEC 60900, which ensures safe working with live wiring up to 1000 Volts. The sliding function allows safe opening of the jaws. Contacting the non-insulated jaws is not required. The 6004 series Joker is similar to a regular adjustable wrench, and that is also where the similarity stops. The Joker is auto-adjusting and with its smooth parallel jaws it offers a secure grip on bolt and nuts, without causing damage. Additionally it has an actual built-in ratcheting function with a 30° back-pivoting angle.
