Spanner for applying large rotary forces with little damage has space with resistance and attachment surfaces arranged alternately, recesses in connections between them for points of bolting device to avoid damage to bolting device

摘要

The device has a body (10) with a handle (11), an actuation part (12) with a space (121) with at least two resistance surfaces (20) and at least two attachment surfaces (21) arranged alternately and with recesses (22) in the connections between them for accommodating a point of the bolting device to avoid damage to the bolting device.