Toolbox Tray for Sockets, 1/2" drive impact, allen
Toolbox organizer tray.
Harbor Freight, Pittsburgh, 1/2" impact drive, allen sets in Metric and/or Imperial
The holes are 1.03" diameter, in case you want to use this tray for different sockets.
If you print one, please post a "Make"!
https://www.harborfreight.com/12-in-drive-metric-impact-hex-socket-set-8-piece-67895.html