Large Capacity Magnetic Socket Organizer Set: These magnetic socket organizers can store up to 143 metric and SAE sockets. The kit includes three blue metric magnetic socket organizers and three red SAE magnetic socket organizers for 1/4", 3/8", and 1/2" drives. Used to collect SAE and metric receptacles, but not for impact sockets. Tip: sockets are not included with the holders Magnetic Base: The magnetic base secures the sockets in their designated places. They won't fall out even if you turn the socket tray upside down. They also allow you to attach the tray to any steel surface No Scratches Installation: The surface of the magnetic base is composed of soft rubber, so there is no need to worry about scratching the surface of your metal tools and sockets, the perfect fit for your toolset Keep Your Sockets Organized: Find the right socket quickly and easily with this magnetic socket holder set. Each tray has a legible label, so you can tell which slot to grab. Instead of finding the socket you want in a disorganized toolbox like before. Tips: The socket organizer set is not suitable for storing impact sockets Suitable for Standard and Deep Size Sockets: 1/4"and 3/8" drive magnetic socket organizers are designed for safe storage of both deep and standard metric and SAE sockets, 1/2" drive socket tray is only suitable for standard sockets, place all your sockets properly. You can set your sockets anywhere, such as in a drawer mounted on the side of your toolbox so that you can access them anytime