Although used primarily to form bezels, these mandrels are also used to shape decorative ornaments, making chain links, and myriad other shapes. The 3 profiles in this series are rectangle, triangle, and square, all of which have sharp corners which you can round off yourself should you need to. All are 10" long overall with handles measuring 9 mm (5/16") in diameter by 1 1/2" long, and they are all made in USA.