A flaring punch is a tool used in the plumbing and fluid engineering industry to create a flared end on a tube. The flare is a tapered enlargement of the end of the tube that allows it to securely fit onto another tube or fitting.
The flaring punch is used to punch the end of the tube and then gradually expand it to create the flare. It is available in different sizes to fit different pipe diameters and can be used on materials such as copper, stainless steel, and plastic.