Set of 2. These high-quality brake disc rotors are a perfect fit for your 2010 Lexus RX 350. It is a solid style rotor with a discard thickness of 0.35 inches or 9mm. The manufacturer part number is JBR1389 and it is made by Autospecialty, a trusted brand in the industry. This product complies with California Prop 65 Warning and is safe for you and your vehicle. It is designed for the rear placement on your vehicle and is a great replacement for your old or damaged brake disc rotor. Buy with confidence and enjoy a reliable and efficient braking system.