This slip joint copper tube reshaping plier is designed to restore flattened, dented copper pipes back to original round diameter for smooth pipeline connection. Equipped with 6 standard sizing holes to fit 1/4", 3/8", 1/2", 5/8", 3/4", 7/8" HVAC copper tubing. Made of solid forged carbon steel with anti-rust coating for long service life. Textured integrated handle reduces hand fatigue during long-time maintenance work. Widely used for household air conditioner, refrigerator, heating pipeline repair, suitable for DIY maintenance and professional HVAC technicians. No extra auxiliary tools required, easy to operate with high efficiency.