These satin finish wiper arms are identified by the two piece drivers side arm. The arm fits over the splines on the wiper transmission, and the stud also located on the transmission itself. Recessed park wipers stop on the lower windshield molding instead of the windshield glass. Sold as pairs only and fit all 1968-72 Cutlass, 442, Hurst/Olds, F-85, and C/S models with recessed park option.