First choice wherever a ring spanner cannot reach. Therefore ideal for tightening screws on brake lines, tie rods, exhaust gas temperature sensors, diesel fuel lines or air conditioning pressure sensors. Can be attached to the side of union nuts or bolts like an open ring spanner. Articulated legs with closing spring and integrated opening aid ensure a self-clamping effect and force transmission to the flanks of the screw head. The ratchet effect enables quick re-gripping. In addition, the marking of the operating direction on the spanner head ensures easy handling. Spanner set in robust roll-up bag with Velcro fastener made of polyester, mesh inserts allow the inserted tool to be seen, secure protection of the tool with minimum space requirement.