"Bought these for the imperial size as we had mislaid a 5/16 one used to change needle on an industrial sewing machine. The pricefor the set was less than the cost of the mislaid item. Did the the job and now we have spares for the rest of the machines grub screws."
"I particularly wanted a set of hex keys in a box, after losing my 2mm key. This seems to be a good buy, the quality is good and now each piece has its own home. One niggle, the printed sizes don't line up with the keys themselves, especially among the little ones. But Screwfix came to the rescue at a quarter to 5 on a bank holiday, so I'm going to let that pass."