Caption: This video shows the review on the koblenz P-4000 commercial buffer and polisher machine. Credit: GoVacuum.com Link to this video Email & IM: HTML Code: Video Information Headline: Koblenz P-4000 Commercial Polisher Buffer Source: GoVacuum.com Release date: Tuesday Jul 31, 2012 Release time: 11:58 am City:: Chantilly State:: Virginia Country:: United States of America [US]