Fiber-Metal F 4001 Cup Sessions are one of the welding helmet protective cap components second to the F 4002 to make up the Model 4000 Quick-Lock mounting system. Fully adjustable to better fit Fiber-Metal caps and major competitive Brands, the welding helmet adapter kit provides more permanent mounting for longer term or high activity applications. The F 4001 Cup Sessions fit over the F 4002 base and includes the pivot points for the attachments of the user’s choice.
