Cummins Tools

I need help finding a good diagnostic scan tool for engines from Detroit, Caterpillar, Cummins?

I need this scaner is hevy truck big rigs Disel engiens. but I need help finding a good mabe not too expensive.

E-Bay!

Barrel removal from a Vz receiver stub.

[affmage source="ebay" results="6"]Cummins Tools[/affmage]