. . "Handbooks and manuals"@en . . "Operator's manual grinding kit, valve seat, electric, concentric drive, 7500 rpm rated no load speed, 115-volt, AC/DC, shielded to prevent radio interference (Albertson and Co. model 1712-S) (4910-473-6437)"@en . . . "Grinding kit, valve seat, electric, concentric drive, 7500 rpm rated no load speed"@en . . . . . .