The Weldmark by CK Worldwide WEM 45V11 TIG power cable adaptor connects TIG torches to machines with stud/lug-nut/bolt-on type connectors. This adapter is made of brass, with a 0.625in left hand female inlet at 18 threads per inch, and a 0.875in left hand female outlet at 14 threads per inch. Compatible with 18, 20, 24W, and 25 series torches. Made in China.