As xj31 commented, and as confirmed by the description, the term "strike free" is used to mean "wrench you don't strike, but which is still designed to loosen or tighten large fasteners". The name is just bad nomenclature. A number of manufacturers make wrenches similar to those. They typically have a number of wrench ends that fit into tubular steel handles, similar to some torque wrenches. The handles are available in different lengths for different leverage or access requirements. If necessary you can cut handles to give the bet leverage in a tight location without destroying the actual wrench. It's also easier to use a cheater bar. Facom calls their range of similar wrenches "Power series" wrenches "54 Metric Heavy-duty offset ring wrenches". Bahco refers to their 310 series wrenches as "ring end heavy duty wrench, deep offset". The name was probably chosen so some manager worried about mechanics swinging hammers around expensive machine or engine parts would order them.
