Custom bikes are machines that have been highly stylized by its owner or by a small-scale manufacturer. Unlike mass-produced motorcycles, customs may be totally unique or produced in very limited quantities. The bikes of choice for radical customization are built in the cruiser mold but to an intense level of fabrication and utilization of one-off pieces, including the basic frame and chassis. Recently, the same kind of customization and personalization has also been applied to sportbikes, with a heavy accent on chrome, extended swingarms and pounds of bling. Some large manufacturers use the word custom as part of a mass-produced model name, which actually just confuses the issue.