Bulk purchases are welcome and discounts are available. The pipe expander is designed to expand the diameter of the air conditioner tube, which can effectively extend the life of the pipe. Manual tube expander comes with a large, professional size guide that covers the entire length of the tube. it can be used to replace old or damaged tubes. Can be used to expand air conditioner, refrigeration, etc. in addition, it can also be used as a tool for replacing the old or broken one 1x Tube Expander