Enhance your air conditioning installation projects with this high-quality Tube Expander Kit, specially designed for expanding copper pipes to ensure tight and secure connections. Crafted from premium bearing steel with a durable blackening surface treatment, these expanders deliver exceptional strength, hardness, and wear resistance for long-lasting performance. Key Features: · Premium Bearing Steel Construction: Made from high-strength bearing steel, providing excellent hardness and wear resistance for reliable and durable use. · Versatile Size Range: Includes five different expander sizes (3/4in, 5/8in, 1/2in, 3/8in, 1/4in) to accommodate various copper pipe diameters commonly used in air conditioning systems. · Hexagonal Shank Design: Features a 1/4in (approx. 6.35mm) hex shank compatible with most manual and electric drills, allowing for quick and efficient pipe expansion. · Prevents Pipe Damage: Maintains good ductility during the expansion process to prevent cracking and leaking, ensuring a secure and leak-free copper pipe connection. · Wide Application: Ideal for HVAC professionals and DIY enthusiasts working on air conditioner installations, refrigeration systems, and other copper pipe projects. Specifications: · Item Type: Tube Expander · Material: Bearing Steel · Surface Treatment: Blackening · Shank Diameter: 1/4in (approx. 6.35mm / 0.3in) hex handle · Expander Sizes: 3/4in (approx. 19mm / 0.75in), 5/8in (approx. 15.9mm / 0.6in), 1/2in (approx. 12.7mm / 0.5in), 3/8in (approx. 9.5mm / 0.4in), 1/4in (approx. 6.3mm / 0.25in) Package Includes: · 5 x Tube Expanders (various sizes) This Tube Expander Kit offers a reliable and efficient solution for expanding copper pipes during air conditioning installations, combining durability, versatility, and ease of use to help you achieve professional results every time.