LTWFITTING 3/16 in. Flare Brass SAE 45° Flare Short Rod Nuts (10-Pack) HF41S310 - The Home Depot
LTWFITTING 1/8-Inch Brass Compression Sleeves Ferrels,Brass
5 16 Compression Fitting
LTWFITTING Compression Reducing Union 3/16-Inch OD x 1/4-Inch OD Brass Fitting (Pack of 25)
LTWFITTING Assortment Kit Tube OD 3/8" 7/16" 1/2" 5
LTWFITTING Brass 3/16 OD x 1/4 Male NPT Compression Connector