Mic Stand Adapter 3/8 Male to 1/4 Male Tripod Screw Double Sides Silver 2 Pack 723115302547 | eBay
Camera Adapter: 1/4" Male - 3/8" Female / Type MA-38 | bol.com
Manfrotto 148KN Gewinde Adapter 3/8" zu 1/4" | Wechselplatten und Basis | Stative | Kamerazubehör | Foto-Heibel
Amazon.com : Foto&Tech 5 Pieces 1/4" Male to 1/4" Male Threaded Screw Adapter Compatible with Camera Cage/Shoulder Rig/Tripod/Socket Studio/Lighting Equipment/LED Panel/GoPro : Electronics