?PRODUCT SIZE?3pcs 1/2 socket organizer drive,holds 36 socktes?3pcs 3/8 socket organizer drive,holds 45 socktes?3pcs 1/4 socket organizer drive,holds 48 socktes ?HEAVY DUTY?This socket organizer is constructed with resistant molded ABS plastic, capable of accommodating both deep and shallow sockets in both SAE(Inch) and metric sizes ?REMOVABLE END CAP DESIGN?Clips can be easily added or removed to meet your DIY needs for multiple sizes on a single rail. Also makes it easier for you to remove the clips to clean the socket rail organizer ?EASY TO IDENTIFY?This socket holder is available in blue, black and red, so you can quickly and easily find SAE and metric sockets ?EASY TO ORGANIZE?Effortlessly manage your tools with this socket organizer. It can be easily organized in your toolbox,mounted on a wall vertically or horizontally, placed on your workbench or stored in a drawer ?BRAND SERVICE ?AMM provides all-day customer service, if you have any questions, please find us through Amazon, we will be happy to solve your problem. Thank you for your attention and support to AMM brand