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 hold SAE and metric receptacles, but not for impact sockets.Tip: Sockets are not included with the holdersMagnetic 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.It also allow you to attach the tray to any steel surfaceNo 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.It's the perfect fit for your tool setKeep 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 identify the correct slot instead of searching through a disorganized toolbox.Tip: The socket organizer set is not suitable for storing impact sockets.Suitable for Standard and Deep Sockets: The 1/4", 3/8", and 1/2" drive magnetic socket organizers are designed for securely store of both deep and standard metric and SAE sockets, keeping your collection neatly organized. You can place them anywhere-such as in a drawer or mounted on the side of your toolbox, for easy access anytime