Precise fully hardened chrome vanadium steel for driving socket screws.

Why not buy a coloured canvas zipper bag to keep them handy?

If you are working on stage this is one of the two sizes you really ought to have in your toolbag, or your handbag. This 8 mm will fit the popular key clamps for size 8, The other you should carry is the 1/4” will fit the size 6 key clamps.