The classic gents' roadster, AKA the "English roadster", has a lugged brazed steel diamond frame, rod-actuated brakes and of late, cable operated drum brake systems have been widely produced for the European market, upright North Road handlebars, a single gear ratio or 3 or 5 speed hub gears, a chaincase, steel mudguards, steel cranks, 28 x 1½ inch (ISO 635) wheels, Westwood rims, and often a Sturmey-Archer hub dynamo. Roadsters are built for durability above all else and no serious attempt is made to save weight in their design or construction, roadsters weigh upwards of 40-45 pounds (18–20 kg). They were often the mounts of policemen and rural letter carriers. A derivative of the roadster, the ladies' model, is seldom called a roadster.