1、5 in 1 Function: A tool with multiple functions to meet the expansion needs of various air conditioning copper pipe sizes. It can adapt to different sizes of copper pipes and is suitable for expanding pipe sizes of 1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch, and 3/4 inch.2、Efficient Swinging Drill Bit: The air conditioner copper pipe expander adopts a swinging design to improve work efficiency and easily handle tedious expansion operations.3、Metal Material: The air conditioner copper pipe expander is made of metal material, durable and easy to operate, with higher reliability. It can be used for a long time without causing damage.4、Applicable equipment: The air conditioner copper tube expander swaging tool can be used in conjunction with drills, and it is recommended that the drill power be greater than 550 watts.5、Performance: Exquisite workmanship, compact appearance, stable performance, ensuring durability and stability 6、Easy to Use: A simple and easy to understand operation process that even non professionals can easily get started using.