Flaring is only half the battle when it comes to automotive plumbing using thin-wall steel tubing. You also need to bend the tubing to fit the car. Sure, you can bend it by hand, but the result always looks amateurish, and you're just asking for kinks. Single-size bending tools (bottom) are cheap, but you'll need to buy several to suit various tubing diameters. The spool-type tube bender (center) is better and fits multiple tube diameters. The articulated bender (top) is our favorite, as it helps eliminate guesswork for professional-looking results.