- Double Headed Square Ratchet Wrench with a double headed design for versatility and easy use in various applications. The square head provides secure engagement for tightening and loosening port valve stems in refrigeration systems. - Durable and Reliable: Made of durable materials, this wrench is built to withstand heavy use, resist wear, and deliver long lasting performance. - Wide Range of Applications: Suitable for disassembly and repair of air conditioners, refrigerators, freezers, coolers, and compressors. A dependable tool for HVAC and refrigeration tasks. - Convenient Size and Design: Four sizes included: 1/4 in, 3/16 in, 3/8 in, and 5/16 in. Compact design allows access to tight or hard to reach places and facilitates flexible operation. - Use Scenarios: - Service refrigeration systems by tightening or loosening port valve stems during maintenance. - HVAC repair and maintenance for air conditioners, refrigerators, freezers, coolers, and compressors in confined spaces. - Tasks in tight spaces where a standard wrench cannot reach.