Copper Pipe Expanders strength alloy steel construction provides longlasting performance with rust and wear resistance for demanding professional applications. Comprehensive multifunction kit includes 4 styling heads, 1 reamer, and 2 chucks, all organized in a sturdy storage box for easy transport and quick access, improving job efficiency on a variety of tasks. Versatile flaring and swaging capability with a chromeplated rotary adapter and a robust flared cone. It offers 9 reaming sizes with an expansion range from 3 mm to 19 mm, enabling precise work on brass, copper, and aluminum tubes. Ergonomic and effortless operation with a comfortable grip and laborsaving mechanism that reduce hand fatigue during prolonged use, making manual pipe flaring smooth and straightforward. What's included 4 styling heads 1 reamer 2 chucks Sturdy storage box Specifications and features Material: strength alloy steel Finish: rust and wear resistant Reaming sizes: 9 options Expansion range: 3 mm to 19 mm Rotary adapter: chromeplated Flared cone: robust design Compatibility: suitable for brass, copper, and aluminum tubes Applications and use scenarios Plumbing installations or repairs involving copper, brass, or aluminum tubes, where precise end flares are required for leak joints. HVAC system work, including flaring refrigerant lines in copper or brass tubing for secure, reliable connections. General fabrication or maintenance tasks in automotive or industrial settings that involve flared tubing in brass, copper, or aluminum.