3814ADA, 3/8" Female to 1/4" Male Adapter - Triad Orbit
Amazon.com: Niewalda 1/4 Inch Male to 3/8 Inch Female Tripod Screw Adapter 3 /8 to 1/4 Tripod Adapter Mount Screws, Accessories for Camera/Tripod/Monopod/Light Stand : Electronics
1/4" NPT Male x 3/8" NPT Female Swivel Straight 1404-04-06 Adapter | NPT Female Swivel to NPT Male - Straight | NPT to NPT | Hydraulic Adapters & Fittings | Hydraulics | www.surpluscenter.com
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
Special Adapter 3/8'' to 1/4'' thread - 088 | Manfrotto Global
Port Adapter - 1/4 x 3/8 Female Flare x Flare Adapter w/ Copper Gasket Brass - 105 - UR3-46 | HVACDirect.com