Any real difference between these two?

[optimusp517]

http://www.partsamerica.com/ProductDetail.aspx?categorycode=3232&mfrcode=CHV&mfrpartnumber=488

http://www.partsamerica.com/ProductDetail.aspx?categorycode=3232&mfrcode=CHV&mfrpartnumber=821

The guy at Schuck's told me they're both teh same thing, you're just paying more for a the name

[czag13]

ummm.. one's bigger than the other?

[optimusp517]

ah, my fault on the posting, but one is an injection cleaner and the other is an injector cleaner. The schuck's guy told me they both do pretty much the same thing, but is it true? What i'm trying to achieve is to clean the injection system not just the injectors.