M821 Adapter Related car key programming tool & M821 Adapter Related OBD2 Diagnostic Tools

XTOOL M821 Adapter Work with KC501/X100 Pad3/X100 Max Key Programmer For Mercedes-Benz All Keys Lost

Item No. COBD210407 XTOOL M821 Mercedes-Benz All Keys Lost Communication Adapter is used for finishing and optimizing all key lost programming for multiple Mercedes-Benz modules.With M821 Adapter, you can save as much as 65% of the calculation time on the process, or save you from plugging the key emulator in and out for hundreds of times.