Features: 1.Heat by Friction: Preserves copper's malleability during the molding process for a leak-tight fitting. 2.10X faster: Flares and swages in 5 seconds: Up to 10X faster than conventional tools. 3.Made of high-quality stainless steel durable. 4.After installing the air conditioner unfold the copper pipe to interconnect the two copper pipes. 5.Avoid Cracks and Leaks: The high-temperature process will assure a perfect fitting the metal doesn't crack or thin. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Description: Material: Stainless steel Height: about 45mm / 1.77in; 50mm / 1.97in; 55mm / 2.16in Size: 7/8 (22.2mm) 3/4 (19mm) 5/8 (15.9mm) 1/2 (12.7mm) 3/8 (9.5mm) 1/4 (6.3mm) Colour: Black Quantity: 6pc/set includes: 1 set x Forging Tool Bit Set (6pcs) "