After trying an inexpensive double flare tool on site. I searched Amazon and found this! It's hydraulic and doesn't require a lot of cranking pressure to get a good double flash all the time! I replaced all of the brake lines on my 2000 Silverado and making the expanders was the easiest. I can highly recommend this remedy. It's a bit pricey but worth it because the flashes it produces last a long time!
JQuad Safety Orange Powder Caliper
9 Review
Universal Car Ratcheting Caliper Piston Tool with 2 Steel Plates - Brake Caliper Press (Red, Two Size)
9 Review
π§ BMC Universal Vacuum Pump: Handheld Brake Bleeder Kit Ensuring Efficient Auto Service & Food Canning with Brake Bleeding Tester Set
9 Review
ABN Brake Drum Tool Kit - 15-Piece Service Brake Kit with Spring Pliers, Brake Spoons, Pad Gauge, Brake Spring Tool
9 Review