3/8" Drive Gridfinity SAE & Metric hex bit socket holders.
2 Holders for SAE & Metric
SAE sizes 5/32, 3/16, ¼, 5/16
Metric sizes 4, 5, 6, 7, 8
These were designed for Cresent Brand Sockets, but may work with other brands.
This is part of a collection that can hold 256 sockets in a Harbor Freight US General Tool Chest in a single draw.