-Made of high-quality brass, it has good wear resistance and high temperature resistance. -Standardized design guarantees the tightness of thread connecting. -The diameter of the interface is 9mm/0.4in, practical and durable. -The shell is made of stainless steel, which is sturdy and pressure resistant, providing the best protection.• 100% brand new and high quality. • Made of high quality copper, it has good resistance to wear and high temperature. • Strict air-tight design, stable and reliable. • Quality assurance, long service life. • Fit for Binzel 15AK/24KD/36KD MIG welding torch.