Spanner wrench for screwing e.g. screw, has driving body with lateral housings receiving flexible blades that are bent by edge of end piece when user applies tightening torque, where end piece is in complementary association with blades

摘要

The wrench has a driving body with an inner cavity divided into a central housing (11) receiving a hexagonal end piece (20) and two lateral housings receiving flexible blades (34, 35). The blades are bent by pushing an edge (21) of the end piece when a user applies a tightening torque. The end piece is in complementary association with the blades after the blades are bent by the edge.