Thanks John! Everyone in our operation knows what goes up there as far as sockets go. Under the row that's missing one socket, the size is listed there......you just can't see it because it was written with a yellow paint pen and is faded. BTW, that is a 24mm 1/2" drive deep well SK impact socket....if you find it let me know will you? LOL! It walked off about three weeks ago. Painting the wrenches is something I've decided I'm going to do to most sets we own. They are easier to see when sitting on a machine and it's real easy to tell where they go if you use different colors. Only thing I'd like to do different is when this compressor dies get one and put it in the back corner of the shop under a housing or something to reduce noise. This one is a good compressor but is very noisy- worse because it's 2' from the office wall.