Aviation Tools Training - Single Flare Tubing - YouTube
RIDGID 3/16 in. to 3/4 in. Model 377 Heavy-Duty Manual 37 Degree Flaring Tool for Copper, Brass, Aluminum, Steel Pipe & Tubing 41162 - The Home Depot
Amazon.com: Speedway Motors 37 Degree AN Flare Tubing Standard Tube Flaring Tool - Steel Construction, Accurate Flares for AN Fittings, Works on Various Tubing Sizes : Automotive