ARMSTRONG52-012 12mm 6 Point Full Polish Regular Combination Wrench

Spanner end fits a 12mm bolt dead-on, the box end fits like it's a 13mm? Very loose, so much that it feels like you'll strip the bolt head or nut you're trying to loosen or tighten (and this is on cycles to Mercedes, not just one fastener, turn around and use the spanner end and that fits snug as it should. All in all appears excellent quality except for the box end being made way to large.

Quality wrench as good price

The right tool for the right job !