Designed for use in welding and gas applications, these acetylene and fuel gas couplers from Western Enterprises offer reliable connections for C-size cylinders. The left-hand male design ensures a secure fit, making them essential components for any welding setup. It is important to note that this product may expose users to lead, a substance known to the State of California to cause reproductive harm, so appropriate safety precautions should be observed. Ideal for professionals and hobbyists alike, these couplers are a vital addition to your welding equipment and fittings.