The Thermacut 220755 is a replacement inner retaining cap designed for Hypertherm HyPerformance plasma systems, including the HPR130XD, HPR260XD, and HPR400XD models. Crafted from durable copper, it securely holds the plasma nozzle in place while effectively directing coolant flow. This component ensures optimal performance and longevity when cutting various materials such as aluminum and stainless steel, maintaining consistent cutting quality in demanding applications.