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If you're looking for a versatile and efficient tool for your HVAC or refrigeration projects, look no further than Klein Tools Box End Wrench 5-1/2 L. These ratcheting wrenches have a 4-pt box end design that provides more contact with fasteners' sides, preventing rounding of corners and ensuring accurate adjustments. They feature a gear mechanism that allows for easy rotation without removing the wrench head from the fastener, saving time and effort. With a 4-in-1 style that covers four different SAE (inch) sizes, this wrench is ideal for valve access on both residential and commercial refrigeration units. Made of durable alloy steel with a chrome finish, Klein Tools' Box End Wrench provides strength, reliability, and longevity. Try it today and see the difference!