Carom cues are generally shorter than pool cues, about 18-19 ounces, hard tip, 12mm, all-wood joint (yes, there is no metal in the joint at all), and with a rapid taper. Nearly all carom players use a rubber grip. This improves consistency and your grip doesn't have to tighten so much on power shots.
Traditionally, the cue balls were both white and one was marked with two black spots. When the balls were made of ivory, the spots were put at the "nerve canal" that ran up the center of the tusk. Plastic balls were introduced in about 1950. The red/yellow/white plastic set was introduced later for TV. The spotted balls were also introduced for TV, and Aramith made them for carom before pool. Carom is on TV frequently in Europe.