6 to the base body 2 by means of pressing 7 the material of the tabs 2 a is plastically deformed into the recesses the tabs 2 a and the disk 6 are connected to each other in a non detachable way by means of the positive fit connection and also by the pressing 7 fig4 shows a section cut through a synchronizing ring 8 having a base body 10 with a friction surface 20 formed integrally with teeth 9 and includes tabs 10 a projecting from the base body 10 on the end the tabs 10 a engage with a positive fit connection in recesses 11 a of a disk 11 with driver elements 12 the disk 11 is secured by welds 13 to the tabs 10 a of the base body 10 the driver elements 12 project radially outwardly from the rotational axis not shown of the synchronizing ring 8 pointing away from the disk 11 the base body 10 is shaped from a metal sheet which is thicker in its original state than the metal sheet of the disk 11 fig5 shows a section cut through a part of a synchronizing ring 14 the synchronizing ring 14 is formed in three parts and has a base body 15 made from brass with a friction surface 21 a disk 16 with driver elements 17 and also a crown gear 18 with teeth 18 a the driver element 17 and the crown gear.