OLDSMOBILE 12 PT BOLT KIT FOR STAMP STEEL VALVE COVERS ,330,350,403,400,425,455

THESE ARE A SET OF 12 PT OLDSMOBILE STAMP STEEL VALVE COVER BOLTS, QUANTITY OF 20 , 10 FOR EACH VALVE COVER . THEY FIT ALL CHROME STAMP STEEL VALVE COVERS , SHORT OR TALL , THEY FIT STOCK VALVE COVERS  . THEY ARE GRADE 8 170,000 TENSILE STRENGTH 12 PT  WITH A GREAT LOOK TO THEM .