Handling Method/Safety Information: HFC-32 is a liquid high pressure gas. Please be sure to read the manufacturers SDS and warnings on the packaging box before use. Packaging specifications/base diameter; Packaging specifications: NRC container with siphon tube. Base diameter: 5/16 flare (1/2UNF-20). *Equivalent to R410 refrigerant NRC (About container collection) After use, please download the empty container order from Daikin Industrial Webpage, and fill out the necessary information and send the fax to the designated carrier. We will ask you to receive your order from your nearest carrier.