The 5.000 OD Coupling .229X12 A27 A/C by Dresser Industries is a high-quality coupling designed for air conditioning and refrigeration applications. With an outer diameter of 5.000 inches and a length of .229 inches, this coupling ensures a tight and secure connection between pipes. Constructed from durable materials, it is built to withstand varying pressures and temperatures, making it ideal for HVAC systems. This coupling meets industry standards for safety and reliability, ensuring optimal performance in your air conditioning setups.