Thank you! Mac, tooLooks like MAC, Cornwell and Steelman also have options:
SO vs. Matco vs. Gearwrench Metric Universal Extensions
SO: https://shop.snapon.com/product/Extension-Sockets---Swivel-Ball%2C-mm%2C-Industrial-(3%2F8%22)/6-pc-3-8%22-Drive-6-Point-Metric-Swivel-Ball-Extension-Socket-Set-(10-15-mm)/206PFSXM Matco...www.garagejournal.com
@D60 - looks like Steelman does make a SAE version, but they are currently OOS: https://steelmantools.com/products/7-swivel-head-3-8-inch-drive-sae-extension-impact-socket-set
8-PC. 3/8" Drive SAE Universal Extension Driveline Impact Socket Set - 12-PT.
{"specs":{"spec":[{"name":"MT_AllowRetailStyle","value":"false"},{"name":"MT_Contents","value":"5/16 – 3/4 (1/16” increments)"},{"name":"MT_Grade_Specs","value":"Impact"},{"name":"MT_HidePrice","value":"false"},{"name":"MT_Pims_Description","value":"8-PC. 3/8\" Drive SAE Universal Extension...
www.mactools.com