• SpeCification of the screw connection tooth: M18 x 1.5 • Recommend to use with the JTC-4530 sliding hammer set. • Contents : 6pcs Adaptor: M14x1 .5 for Delphi M17x1.0 for Bosch M18x1.5 for universal M20x1.0 for Denso M25x1.0, M27x1.0 for Siemens 1pc Socket: 1/2"Dr. x H10 3pcs Puller: 12mm for Benz CDI(A class, Sprinter, Vito) 13mm for Benz CDI engine OM 611, 612, 613 ,etc. 16mm for Citroen, Fiat, and Peugeot and Benz M651.