Short PTFE Shroud & Long PTFE Shroud for use with Standard Threaded Brushes and Classic Wand 4", 2" and the Flexi Handle. Always use an insulating shroud in accordance with TIG Brush operating instructions. This is important for safety and to prevent damage to the equipment. Replacement shrouds are available for single brush tips (standard with all TIG Brush units), dual brush adapters and quad brush adapters.