Drott developed buckets for other manufacturer's constructionbulldozers, including one of the first of its type for Caterpillar in 1930. The bucket held roughly 1 cubic yard of soil. The company's best-known product was the Drott 4 in 1 bucket. This was a tractor attachment with four functions: dozer, clamshell, bucket and scraper. The "International Drott" was an International Harvester tractor fitted with Drott equipment. In 1950, International signed an agreement with Drott to produce the machines under the name "International-Drott."