Info Patented Socket organizer size stems Super fast socket size identification Plugs right into the organizer Color as needed for your use Lifetime warranty 100% customer satisfaction Ships direct from the USA Simple and effective tool organization Info & Specs 1/2" SAE Socket modular size stems Modular stem plugs into socket organizer Includes; 19 SAE size stem inserts. Sizes 3/8" to 1-1/2" inch. Removable and changeable at any time Fast socket selection with size stems. Spot the right socket with ease. Mark raised numbers with a marker of choice. Pick a color - red, blue, green, black, etc. Made for 1/2" socket organizers only. Simple and effective tool organization. Mechanic and Veteran Owned  Patented, trademarked & copyrighted. Includes: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-3/16, 1-1/4, 1-5/16, 1-3/8, 1-7/16, 1-1/2 inch. Shipping Free US Shipping for $149+ orders We ship USPS, FedEx, UPS Ground Next-day shipping for M-F orders The TBW-SO12SAE kit is 1.15 ozs. Shipping Policy Warranty Lifetime warranty & total satisfaction. Unhappy? Contact us, we'll make it right. The warranty covers TBW products for life. Committed to keeping customers happy. support@toolboxwidget.com or Contact us page See Warranty Page (Click Here)