These socket holders will fit Harbour Freight 1/4" SAE and Metric Sockets. Both the long and short sockets will fit.

Superglue 6mm (diameter) x 2mm (height) neodynium magnets to hold the sockets in place.

There are spots for magnets on the bottomside, such that the tray will stay fixed in metal toolboxes.

The Harbor Freight "professional" series sockets haven't been tested for fit.

Links to Harbor Freight Socket Sets:

• https://www.harborfreight.com/10-pc-14-in-drive-sae-high-visibility-socket-set-61340.html
• https://www.harborfreight.com/14-in-drive-sae-color-coded-deep-socket-set-10-pc-67865.html
• https://www.harborfreight.com/14-in-drive-metric-high-visibility-socket-set-10-pc-67940.html
• https://www.harborfreight.com/14-in-drive-metric-color-coded-deep-socket-set-10-pc-67868.html