Brand New Ultralite 30 Vane Rotor, Driver or Passenger Side Mount (Part #160-3450). Ultra-Light UL straight vane rotors provide high value performance and rugged durability for a wide range of competition, high performance, and sport driving applications. Don't confuse these rotors with bargain priced off-brand named parts. Wilwood's modern manufacturing capability, combined with large scale economies, make it possible to offer this level of quality and performance at such an affordable price. Features: Premium grade, medium weight castings. Suitable for moderate temperature racing to street use. Specs: Width (in): 0.75 Diameter (in): 10.5 Material: Iron Vane Count: 30 V Weight(Lbs): 6.6 Rotor Bolt Circle (in): 6 x 5.5 Rotor Mount Hole Size (in): 0.326 Lug ID / Registration (in): 4.94 Far Side Inside Diameter (in): 6.75