1/2" inch ID premium heater hose that is strong enough to replace OEM heater hose on cars and light trucks. This hose is similar to SAE20R3 class D2 with EPDM tube and cover. Resists weathering and corrosion. Black color and sold by the foot. Maximum continuous length is 50ft and discounts for long lengths are listed below. Example: Purchase quantity of "5" and receive a 5 foot section of hose.