Just bought these for the toolbox in the truck. The sockets have a nice tight fit. Holds all of the ones I need. I just bent the corner slightly to keep the sockets from sliding off the rail. A lot more durable than the previous ones from the auto parts store.

The socket rails you'll find at the blue big box store and the orange big box store hold ten sockets (not enough for a complete set), and they're lower quality than this one. The cheap import tool store sells a lower-priced alternative, but those things are junk. This rail holds 14 sockets, and feels high quality. Buy it. P.S. These fit perfectly in the Tactix 4 Drawer (and 3 Drawer) Steel Portable Tool Chest.

I saw these socket rails last week and instantly liked them. Mainly what I like is the handle and the ability to have multiple drive sizes on one rail. This allows for one complete socket set that you can take with you under a car and alleviates the need for either multiple rails or multiple trips to the tool chest. Plus the clips really hold the sockets on but allow the sockets to come off easily when needed. I'll be buying more.