Kahler is better known for their cam-style systems as shown above. These tremolos, although very different than a Floyd Rose, were also very popular and were sported on a variety of guitars brands throughout the 1980s (and today). These cam-style systems were Floyd Rose’s main competitors.
The cam style requires less routing and has a differing spring mechanism. That being said, many tremolo users are rather polarized in either loving or hating a Kahler. It’s all personal preference.