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
Threading Adapter, G 1/4 Male to NPT 3/8 Female
Crescent CDTA0 1/4" Female x 3/8" Male Socket Adapter - - Amazon.com
Female Pipe Reducer 3/8" to 1/4" Npt Adapter Coupler Brass Fitting Water Oil Gas | eBay
Kobalt 1/4-in x 3/8-in Adapter in the Air Compressor Fittings department at Lowes.com
3/8" Female SAE Swivel X 1/4" Male NTPF Adapter | Calóre Equipment
Husky 3/8 in. Male x 1/4 in. Female Reducer HDA30400AV - The Home Depot
Brass adapter 1/4 compression x 3/8 MPT - APEX
Buy Lasco Female Compression X Male Compression Adapter 1/4 In. FC X 3/8 In. MC