Wera 7870 Joker Self Setting Insert Spanner for X and XP Click Torque Wrenches

The Wera 7870 Joker S is the small-size variant of the self-setting insert spanner, designed to cover wrench sizes from 10 to 13 mm — ideal for the smaller fasteners commonly encountered in precision and general assembly work. It fits directly into Wera Click-Torque X and XP series torque wrenches via its 9x12 mm square head mounting. The self-adjusting jaws eliminate the need to carry multiple fixed spanners, automatically setting themselves to the correct size as soon as the tool is placed on