Offered here is a Black & Decker Valve Grinder and Valve Seat Grinder Instruction Manual. This manual covers the B&D 'Vibro Centric' Seat grinder Set and B&D 282/550, 6300, & 6305 Type A, T, TC, TD Valve Grinders. I have also added a complete parts breakdown of the Type T, TC, & TD valve grinder, a parts breakdown of the Model 6320 Vibro Centric HD Driver, and a instruction sheet on the No. 57646 Stone Dressing Stand.