Expandable Helmet Air Pumper Hose is super lightweight, only half a pound, with an expandable hose stretching between 2-6ft and collapsing back manually to the original shape when not in use. Now compatible with threaded cuffs for the MagLock Helmet Air Kit, the new design seamlessly works with existing pumpers and helmets. The enhanced flexibility ensures multiple point adjustments between the blower system and helmet. Having durable cufflink ends, which stay tightly connected to the helmet and pumper system, the hose remains secure even during the harshest racing environments. While being designed for the MAC Pumper series, this hose also fits Parker Pumper and other popular models. The inside diameter of the hose is 1.25in. The Pumper system, MagLock, and helmet are not included.