Now this is value! 5 bucks for this set of feeler gauges. Feels quite sturdy. It was, as others has pointed out, very oily out of the package, but there is probably some good reason for this. Wipe it through with a few paper towels and you're good to go. I used them for their intended purpose, but also used them for a makeshift nut file (make "teeth" on a few of the feeler gauges and saw carefully with them - only possible with strings E-B,G & D), which worked great. Used leftover strings to file down the A and lower E-strings, so I managed to get a good nut filing for 5 euros.