The R1234YF/R134A Ac Oil InjectoHVAC Dye Oil Injector with R134A Snap Quick Coupler is a heavy equipment part designed for use in air conditioning systems. Made in China, this item weighs 1.83 pounds and is compatible with International equipment. As an automotive binding product, it falls under the category of air conditioning lines & hoses, making it a valuable addition for those in need of HVAC dye oil injection equipment. The inclusion of the R134A Snap Quick Coupler further enhances the functionality of this product for efficient and precise dye injection.