1/4" 3/8" 5/8" M8 M6 Male To Female Thread Screw Mount Converter Adapter Mic Bracket Stand Tripod Plate Slr Camera Accessories - Photo Studio Kits - AliExpress
Triad-Orbit 5/8" to 3/8"-16 Camera Adapter 3/8ADA B&H Photo Video
Dynabrade - Adapter for Sanding Discs: 3/8-24 & M8, Female & Male, 1-3/8" Long - 52263308 - MSC Industrial Supply