1pc Copper Pipe Drill Bits Flaring Hex Handle Practical Tube Expander Set Rotary Tool (Color : Black, Size : 6-8-10)

Made of steel material, durable for use.

Expand the copper pipe to make the two copper pipes interconnected when the air conditioner is installed.

It needs to be installed on hand electric drill.

Rugged, easy to use, your good assistant for work and life.

Forging tools makes it easier to extend pipes.