Manfrotto 015 Adapter 1/4" - 3/8" – Thomann United States
Dinkum Systems Adapter Screw - 1/4" to 3/8" 3075 B&H Photo Video
Kobalt 1/4-in x 3/8-in Adapter in the Air Compressor Fittings department at Lowes.com
Brass adapter 1/4 compression x 3/8 MPT - APEX
Female Spigot for 026, 1/4''-20F and 3/8''F, 31mm Long Adapter - 119 | Manfrotto US
Amazon.com : Camera Screw Adapter Thread 1/4" Male to 3/8" Female and 3/8" Male to 1/4" Female Adapter Set for Camera Monitor, Tripod, Mount : Electronics
Buy Lasco Female Compression X Male Compression Adapter 1/4 In. FC X 3/8 In. MC
Double-Stud-1-4--and-3-8--Adapter - PhotoProShop
CRAFTSMAN 1/4-in to 3/8-in Socket Adapter in the Socket Adapters department at Lowes.com
3814ADA, 3/8" Female to 1/4" Male Adapter - Triad Orbit
3/8" Female SAE Swivel X 1/4" Male NTPF Adapter | Calóre Equipment