... 2. Portable degsin. 1. High end brake disc machine (brake machine, auto brake lathe, brake drum disc lathe)2. ... 's efficiency .The variety of adapters lets you machine all standard and composite rotors for foreign and domestic ... your work fast . SpecificationMODELAAE-C3970CSpindle Travel9-7/8" / 251mmSpindle Speed70, 80, 118 RPMRotor Diameter7" / 180mm - 18" / 457mmMotor Thickness4" / 102mmDrum ...