Double head screw 1/4" Male to 1/4" or 3/8" Male Threaded Adapter 1/4 to 3/8 Inch Male Adapter for Tripod Camera
1/4" Male to 3/8" Male Threaded Screw Adapter – SIOTI
iShot Pro 1/4 - 3/8 Hybrid Convert Reducer (2-pack) Screw Adapter for SLR Camera, Tripods, Ball Heads and MonoPod - iShot Mounts
Amazon.com: Rigych 1/4 to 3/8 Tripod Screw Adapter 8 Pcs 1/4 Male to 3/8 Female and 3/8 Male to 1/4 Female Camera Screw Adapter for Camera Mount Tripod Stand Microphone Stand Mic Mount : Musical Instruments
Foto&Tech Brass Screw Adapter Spigot 1/4"-20 Female to 3/8"-16 Male Threaded Male Tripod Thread Reducer for Camera Cage/Shoulder Rig/Tripod/Socket Studio/Lighting Equipment/LED panel/GoPro - Walmart.com
K&M 1/4" to 3/8" Thread Adapter 21770.000.29 B&H Photo Video
SmallRig New Thread Adapter w/ 1/4" to 3/8" thread 5pcs pack 1610 / SYNTEX.TV
1/4" to 3/8" Threaded Adapter
iShot Pro 1/4 - 3/8 Hybrid Convert Reducer (2-pack) Screw Adapter for SLR Camera, Tripods, Ball Heads and MonoPod - iShot Mounts
Walmeck 1/4"-20 to 3/8"-16 Threaded Screw Adapter Converter Female Spigot Reducer Bushing Screw Mount Set for Camera Tripod Monopod Ballhead Flash Light Stand Shoulder Rig - Walmart.com