Used for flare copper/water pipes, regular maintenance of air conditioners, refrigerators and household appliances in workshops and field service scenarios Designed with multi-size design and high-grade carbon steel construction, this expandable socket wrench set ensures appliance maintenance Ideal for HVAC technicians, home appliance repair professionals and enthusiasts who need tools for refrigerator repairs or copper tubing The durable finish and ergonomic design make it a must have for minimal tool slippage while working It has an inch internal square drive bore for seamless compatibility with standard equipment, and can be combined with versatile expansions for increased access in tight spaces, Manufacturer: Pffiocix