2 Pack 3/8 Compression Nut & Ferrule Combo for 3/8 OD Tube Brass Sleeve Nut

3/8 Compression Nut for 3/8 Outside Diameter Tubing, (2 Pack), These are 3/8 compression nuts that are designed to be used with 3/8 outside

LTWFITTING Value Pack 1/4-Inch OD Brass Compression Insert, Sleeve Ferrule, Nut (Pack of 125) : : Industrial & Scientific

LTWFITTING 3/8 in. O.D. Brass Compression Coupling Fitting (10-Pack) HF62610 - The Home Depot

Threaded Brass Ferrules

Fitting Your Project Together: A Guide to Brake Line Fittings – 4LifetimeLines

Tools & More – tagged Other Tools – compressor-source

Brass 3/8-in COMP Nut with Insert

Nut And Ferrule Fitting

Sioux Chief 3/8 inch Chrome-Plated Brass Compression Nuts with Sleeves (2- Pack)

Brass 3/8-in COMP Nut with Insert

3/4 COMPRESSION NUT & Ferrule Combo for 3/4 OD Tube Brass Captive Sleeve Nut $9.95 - PicClick

Compression Fitting Ferrules