Thread Adaptor M10 x 1 – 3/8 x 24NF DPS | BrakeConnect
Brass Brake Union 3/8 unf Male to M10 x 1 Female | eBay
3/8 To M10 To 1/4 Conversion Screw Male To Female Thread Screw Mount Adapter Tripod Screw For Camera Flash Light Tripod Monopod - Tripod Monopods - AliExpress