Wrench for slotted nuts on surface -For slotted surface nuts. - The key adjusts like compasses, by moving the central screw. - Removable double and square tenons. - Each wrench comes with 4 sets of 2 tenons. - Capacity: 20 to 100 mm - Length: 245 mm. - Finish: Satin chrome-plated. Weight: 0.530 kg.