Amazon.com: DOT Air Brake Line Fittings Connector for Nylon Tubing 1/2", Brass Air Compression Nylon Hose Fitting with D.O.T Approved for Trucks Trailers and Industrial Repair(Pack 2) : Industrial & Scientific
4 pieces Brass 3/8" Line Compression Fitting Union Steel Copper Nylon Plastic | eBay
Misting & Cooling System Compression Brass | AmFog
Proline Series 1/2-in x 1/2-in Compression Coupling Union Fitting in the Brass Fittings department at Lowes.com
Everbilt 1/4 in. Compression Sleeves and Brass Insert Fittings (2-Pack) 800599 - The Home Depot
Brass No-Crush Insert for 1/4" Nylon Tubing Compression Fittings
How To Install Compression Fittings on Nylon and Copper Tubing - YouTube
Air Brake Compression Fitting, Nylon Tubing Insert, 1/2" | Velvac
1/2" Pipe Thread X 3/4" Nylon Tubing Male Connector Compression Fitting - Pro Trucking Products
DOT Approved Compression Fittings - Nylon Tubing Male Elbow