Features: brand new and high quality ● Easy to install: very suitable for installers, whether you are just learning or already doing ● Five in one: One can easily complete the task. ● Function: You can use it to replace the old or damaged one. ● High-quality materials: made of metal. Has high and uniform hardness and wear resistance, and high elastic limit ● Note: When installing the air conditioner, expand the steel pipe to connect the two steel pipes to each other Specifications: Model: CT-900F-5S Material: Steel Color ：Black British system: 1/4"(6mm),3/8"(9mm),1/2"(12mm),5/8"(16mm),3/4"(19mm); Package Includes: 1xPipe Expander Drill note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.