Insulator Compatible with Model PTA-17 PTA-17F PTA-17V PTA-17FV PTW-18 PTA-26 PTA-26F PTA-26FV Compatible with Series PTA-17 PTA-26 PTW-18 TIG Torch Application Gas Lens Large Diameter Gas Lens Non-Gas Lens Stubby Gas Lens Stubby Non-Gas Lens Type Standard Welding Processes TIG Welding (GTAW) Color White