MATRIX THREAD GRINDER MODEL: 47 SPECIFICATIONS: SWING OVER TABLE WAYS:.......... 16" DISTANCE BETWEEN CENTERS:....... 42" MAX. GROUND LENGTH:............. 40" MAX. GROUND DIAMETER:........... 12.5" GRIDING WHEEL DIAMETER:......... 16" AND 20" HP OF WHEELHEAD DRIVE:.......... 10 AND 20 HELIX OF WHEEL, LH & RH:........ 45" WORKHEAD THRU BORE:............. 3.97 EQUIPPED WITH: DRESS UNIT - MATRIX AUTOMATIC SINGLE POINT UNIT REF. VTG FOR DRESSING FOMS BETWEEN 20 DEGREES AND 60 DEGREES INCLUSIVE MAXIMUM FORM DEPTH IS 0.5" MATRIX WHEEL BALANCING FIXTURE SET OF PITCH CHANGE GEARS HOOD