This six-tray set holds up to 195 standard or metric sockets, as well as ratchets and extensions plus adapters. It's designed to fit in your Craftsman bottom chest to free up even more space for your tools. If you need to store deep well sockets, the socket organizer set trays convert to make room. Each opening has a size designation to make it easier to put your hands on exactly the right socket for the job. The organizer has six trays to accommodate both metric and standard sockets and at only 3.25 lbs. it's an easily manageable addition to your tool organizer sets.