A Sanha 15X1/2" Gas Female Adaptor is a type of plumbing fitting that is used to connect two pipes or hoses together. Specifically, it is designed to connect a 15mm diameter pipe or hose with a 1/2" inch female gas thread. The adaptor is typically made of brass or another durable material and features a threaded connection on one end and a compression fitting on the other end, which allows it to be easily installed and removed. This type of adaptor is commonly used in gas supply applications to connect gas pipes to appliances, meters, regulators, or other components in a gas system.