Manfrotto Mounting Adapter, 1/4" x20 Female Thread to 3/8" Male Thread Adapter with Knurled Flange. (#3367)

CAMVATE 3/8"-16 Female to 1/4"-20 Male Adapter for Tripod and Camera and Tripod

JJC Male 1/4"-20 to Female 3/8"-16 Threaded Screw Converter Adapter for Mounting Camera and Other Devices with Female 1/4"-20 Thread to Tripod, Monopod and Other Devices with Male 3/8"-16 Thread

Rock Steady SS Stainless Steel 1/4" to 3/8" Bushing Adapter/Tripod 50mm Diameter Desmond

Vixen Optics 35505 Polarie Star Tracker (White)

Standard 1/4"-20 Female to 3/8"-16 Male Screw Adapter Reducer Bushing Converter for DSLR Camera Camcorder Tripod Monopod Ball Head Ballhead Video Light Stand (4 Pieces)

CAMVATE 1/4" Female to 3/8" Male Convert Adapter for Camera Tripod and QR Plate

Foto&Tech 10 Pieces Metal 1/4 inch to 3/8 inch Convert Screw Adapter for Tripod Monopod Ballhead DSLR SLR

Fotasy SR10 3/8"-16 to 1/4"-20 Reducer Bushing Convert Screw Adapter (10 packs)

Manfrotto 015 1/4-Inch-20 Male 20mm Long to 3/8-Inch Female Adapter - Replaces 3358

Manfrotto 502 Video Head MVH502AH