Campagnolo 03 Disc Brake Rotor It's Time To Stop Disc brakes are on just about every type of bike these days. With a good set of disc brakes, your bike will stop on a dime. The Campagnolo 03 Disc Brake Rotor is a 2-piece center lock rotor for use with Campagnolo hydraulic brake systems. It is available in 160mm and 140mm diameters. It features a rounded external edge that prevents the cutting of skin in case of contact with the rotor and an inner aluminum spider that maximizes heat dissipation. Features2-piece center lock rotors for use with Campagnolo hydraulic disc systems Rounded external edge prevents the cutting of skin in case of contact with the rotor Inner aluminum spider maximizes heat dissipation SPECIFICATIONSDiameter140mm, 160mm Material Steel & Aluminum Intended Use Road, Gravel Weight120g (160mm) | Campagnolo | 03 Disc Brake Rotor 140Mm