The Alumina Gas Lens TIG Cup, size 4, is designed to enhance your gas tungsten arc welding (GTAW) experience with its precise 1/4-inch opening and standard diameter. Manufactured by Weldmark, this durable cup is compatible with torch series 9, 20, 24, and 24W, making it a versatile addition to your welding toolkit. Crafted from high-quality alumina, it ensures optimal performance while providing the necessary shielding for your welding applications. With its standard length and gas lens design, this TIG cup is engineered to deliver superior results in various welding scenarios.