The 3-pc Magnetic Socket Organizers from Dynamic come equipped with a strong magnetic base, making them ideal for mounting on the side of a toolbox or any other steel surface. Each set includes three different drive sizes - 1/4", 3/8", and 1/2" - and is available in both SAE and metric socket sizes. The SAE set comes in red and can hold up to 68 sockets ranging from 1/8" to 1-1/4", while the blue metric set can hold up to 75 sockets from 4mm to 27mm. These organizers accommodate regular and deep chrome sockets, as well as impact sockets, and are clearly labeled. They also feature a rubberized base and meet ANSI standards.