There are two products included in this kit:

2.1 VOC 2K Urethane Primer-Surfacer (High Build) VF6330 is a new generation Low VOC super high build primer-surfacer.  Designed for use under all single stage or basecoat clearcoat systems.  Excellent adhesion to cut through bare metal areas and direct to unsanded e-coat, for undersides of hoods, fenders, and jambs with superior sandability.

and One 2.1 VOC 2K Urethane Primer-Surfacer VF6331 Activator