Material: Copper tube expander is made of heavy duty stainless steel, solid and sturdy, not eay to deform and with long service life Hinge Design: Universal copper pipe expander tool with hinge design, which can avoid swing of handle, ensuring stable operation Comfortable To Hold: Ergonomic engineering designed handle with coarse surface makes copper pipe stretcher comfortable to hold and non-slip Application: This hand expanding tool can be use to expand copper pipe with diameter between 6-22 mm. Widely used in the maintenance of refrigerators air conditioners freezers and other refrigeration equipments Easy To Use: The manual tube expander is a simple but effective hand tool for air conditioner maintenance and repairing, Manufacturer: VIFERR