GM tech2 for opel programming

our workshop recently get one diagnostic device GM tech2, fortunately
it has softwares,GM,OPEL,SAAB,ISUZU,SUZUK,Holden

Everything seems perfect,one tools with types softwares and price is good
see this ,really nice

I want to purchase a GM diagnostic scanner to poke around and do some home

diagnose/tweaks/repairs on my GM truck.