JEGS 555-63077: Brass Adapter Fitting | 3/8 in.-24 Male Thread for 3/16 in. Brake Line | 7/16 in.-24 Female Thread Inverted Flare for 1/4 in. Brake Line | Set of 2 - JEGS
BRAKE LINE ADAPTER 1/4" LINE to 3/16" LINE | eBay
Brake Line Nut Adapter 3/16" To 1/4" - Classic Chevy Truck Parts