Tripod Screw Adapter, Screw Mount Convertor Tripod Screw Adapter 1/4 To 3/8 With 1 X Screw Adapter For Tripod Adapter - Walmart.com
Digital Torques Adapter, Wrench Adapter, Torsion Meter Portable, 1/2 Drive, High Accuracy with 2 x Conversion Head (1/4 and 3/8) & 1 x Screwdriver for Family Labor - - Amazon.com
Bracket Speedlight Stand | Photography Camera Adapter | Bracket Speedlight Studio - 1/4 - Aliexpress
Husky 3/8 in. Female to 1/4 in. Male Drive Adapter HADPTR3814 - The Home Depot