Turbo Groove automotive brake discs have a widened, arcuate gap that increases the flow of cool air, lowering the temperature of the brake pads and brake disc, while draining dust, dirt and hot gases better than a straight line, which can rust and become ineffective. Drilled holes remove surface gases when braking from high speed, while not weakening the structure of the disc as in through drilling. TECHNICAL DATA Type: Drilled and Slotted Full / Ventilated: Full Number of holes: 5 Diameter (mm): 308 Height (mm): 64 Thickness (mm): 12 Minimum thickness (mm): 10 Axle application: Back APPLICATION Brand Model Engine Value Power (KM) Year LEXUS GS300 3.0 98-2005 LEXUS GS430 4.3 2000-2005 LEXUS IS200 2.0 153 99-2005 LEXUS IS300 3.0 230 2001-2005 LEXUS SC430 4.3 2001-2010 TOYOTA ARISTO JZS161 3.0 TWIN TURBO 97-2005