Black&Decker Vibro-Centric Kit. Black&Decker Valve Refacer Cat No.8305 Type A. SN:6470294. Black&Decker Seal Grinder Cat No.57646. with miscellaneous pilots and stones. 6" diameter. Item is located in Niagara Falls,NY and SELLS AS IS WHERE IS. Bidders are responsible to act on their own inspection prior to bidding. Call 716-609-1456 to schedule an inspection.