Easy to use, simply press the handle gently to operate, and it will automatically reset upon release. Universal wide-range tubing expander featuring a hinge design to prevent handle swing, ensuring stable operation. Convenient for expanding and providing precise results. Compatible with tubing O.D.: 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 7/8 (6mm, 8mm, 9mm, 10mm, 12mm, 16mm, 19mm, 22mm). Robust and durable, built with a straightforward design for brass pipe expansion. Made from zinc-iron alloy materials for long-lasting use. Hand Expanding Tool suitable for various refrigeration applications, widely used in the maintenance of refrigerators, air conditioners, freezers, and other refrigeration equipment.