pipe flaring tool, or toolkit, is a tool which consists of a set
of bars with holes that match the diameter of the pipe end to be
shaped, and a yoke that drives a cone into the mouth of the tube.
The two most common types of flare are the single flare, used for
pipes carrying low pressure fluids, such as a fuel line, and the
double flare for higher pressures such as in a brake system.
To make a single flare, the pipe is placed into the anvil level
with the top of the flaring bars. With the clamp screw firmly tightened,
the feed screw flares the end of the tube. A double flare is made
in a similar way, but more of the tube is exposed to allow for the
folding over into a double flare. A double flaring button is placed
into the end of the tube and removed after tightening. Turning the
feed screw completes the forming of the double flare.