The Engineer ts-04 is a useful set of light duty spanners - just 1.5mm thick, supplied on a (detachable) chain. sizes include 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm,6.0mm, 6.5mm, 7.0mm, 7.5mm & 8.00mm. Ideal for modelmakers, workshops, hobbyists, RC, robots etc.
Ideal for those situations where only the thinnest of spanners will fit! (precision engineering, modelmaking, hobbies, RC etc)
please note: whilst the manufacturer has used hard grade stainless steel material for this product, the spanners only intended for light usage - there's obviously a limit to how much you can push a tool that measures just 1.5mm thick!