The 1.900 CPLG .165X5 A42 A/C from Dresser Industries is a precision coupling designed for air conditioning systems. With a diameter of 1.900 inches and a length of .165X5, this coupling ensures a tight and secure fit for optimal performance. Constructed from high-quality materials, it is built to withstand the rigors of HVAC applications. The A42 specification indicates its compliance with industry standards, ensuring reliability and safety in operation. This coupling is ideal for connecting various components in air conditioning systems, providing a seamless flow of refrigerants.