The collet housing is part of the specialized “Pyrex” / “Jumbo” kit for TIG torches 101/301/321, a component that provides stable electrode clamping, allowing the welding process to be carried out safely and precisely. Thanks to its unique design, the housing is compatible with large and specialized welding accessories, such as Pyrex and Jumbo gas lenses, which offer excellent gas protection and greater welding arc stability. The housing can withstand high temperatures and intense working conditions, ensuring longevity and reliability, even in the most demanding welding tasks.