DON'T COLLAPSE! Zirgo's Ultra Hose has a strong corrugated structure that will not collapse or crack like typical rubber radiator hoses. The Ultra Hose Stainless Steel Hose Kit are available in 4 lengths; 12", 24", 36", and 48" for 1-1/4", and 1-3/4" O.D. water necks. With this many sizes in one kit, the Ultra Hose is sure to fit almost any hot rod, street truck, muscle car, import or custom vehicle out there. The Ultra Hose Stainless Steel Hose Kit contains one Ultra Hose Flexible Corrugated Hose, two polished billet aluminum smooth hose ends, four stainless steel hose clamps, and two 1-3/4" and 1-1/4" neoprene reducers, along with 2 each- 1-3/4" high strength sleeve adaptors. Also available in matching heater hoses. All Zirgo accessories come with a Limited Lifetime Warranty.