Serial No. 400.3.0011.02 Year - 2002 SPECIFICATIONS: Number Of Conditioning Rings............Up to 3 Ring ID............Up to 5.5" Plate Diameter - Outside............15" Plate Diameter - Inside............3 1/2" Speed - Standard............60 RPM Drive Motor............1/2 HP Electrics............110V / 1Ph / 60Hz Dimensions - Approximate............26"(L-R) x 21"(F-B) x 22"(H) Weight - Approximate............300 Lbs. EQUIPPED WITH: 15" Polishing Plate (2) Yoke/Roller Bearing Assemblies (2) Conditioning Rings Timer (Minutes/Seconds) *Preliminary specifications, pending confirmation.