A spanner extension to turn a spanner into a power bar. The extension wrench firmly grips the shaft of the spanner to extend the leverage and exert a greater force on the fastener. This Universal design can be used with spanners, socket wrenches and hex keys. It is ideal for freeing rusty, tight or seized nuts and fasteners even in confined or hard to reach areas. The extension wrench is made from chrome vanadium steel for strength and is fully polished and chrome plated for solid, reliable use.