MUST BE USED WITH TPCA130-1938, TPCA130-1524 OR TPCA130-1775 OR TPCA130-928 CHECK THE PPA LOCATED DIRECTLY ABOVE THE DISCS SIZE: 13" HUB: 1 1/2" SPLINE: 10 CENTER: SPRING CORE #: 131 CORE PRICE: $15.00*