This 1/4” drive set has both standard(5/32-9/16) and metric sizes (4mm-14mm)in a convenient case that keeps everything organized. Perfect for small jobs around the house or garage. Set includes deep well sockets for each size and a couple of rachet extensions and a universal. The only cons have is that it would be nice if the case had a handle to make it easier to carry. The bottom of the case does not hold the sockets in place like the lid does. If you happen to flip the bottom up to close it all of the sockets will fall out whereas the sockets on the lid are tight in their compartments.