Tekton Socket Rails are universal socket organizers that securely hold 3/8 inch drive sockets and bit sockets. Rail capacity may vary based on individual socket diameters. Place sockets onto the clips to store them loosely, or twist them clockwise onto the clips to lock them in place. Detent bumps on the clip tabs engage with the socket to keep it secure, even when on-the-go. Sockets with only two detent grooves, such as impact sockets, will not engage with detent bumps on the tabs if placed incorrectly. Lock the rails into a tray with the keyhole slot. To release, press the button beside the keyhole latch and slide the rail out. Our rails are molded from a strong, rigid, and impact-resistant ABS polymer. This gives you a stiff and well-supported product suited for supporting the weight of the sockets.