This is a brand new replacement wiper arm that attaches to a knurled fitting. This arm is compatible with our flat hook style wiper blades, T94. If you do not have a knurled fitting you can purchase our adapter kit, T351 and use this arm. This arm can be used with most Chrysler, Dodge, Plymouth and Desoto Cars built from 1928 to 1948 and most Dodge Fargo and Plymouth Trucks built from 1928 to 1956.