Features [High Carbon Steel] The pipe expander is made of high carbon steel, with high hardness, no deformation after long term use, and is not easy to be damaged. [Multiple Uses] Tube expansion tools are widely used in the maintenance of refrigeration equipment such as refrigerators, air conditioners, and freezers. [Easy to Operate] The use of the expander is simple, and you can use it with a pistol drill with a power of more than 550W. [With Storage Box] The tube expander comes with a storage box, you only need to put them in the box when not in use, which is convenient to carry and not easy to lose. [Applicable Size] This pipe expander is suitable for 1/4in 5/16in 3/8in, 1/2in 5/8in, 3/4in, 7/8in pipes and can help you complete the expansion work very well. Specification: Item Type: Pipe Tube Expander Material: High carbon steel Model: CT 900S A Application: Pipe expanding tool Expansion Tube Size: 1/4in 5/16in 3/8in, 1/2in 5/8in, 3/4in, 7/8in Package List: 1 x 1/4in 5/16in 3/8in Pipe Tube Expander 1 x 1/2in 5/8in Tube Expander 1 x 3/4in Tube Expander 1 x 7/8in Tube Expander 1 x Storage Box Note: Pay attention to safety protection when using Package List 1 x 1/4in 5/16in 3/8in Pipe Tube Expander 1 x 1/2in 5/8in Tube Expander 1 x 3/4in Tube Expander 1 x 7/8in Tube Expander 1 x Storage Box