Jar Roller is a rolling device which is designed to offer rotation process for Epoxy compound and Solder paste materials. It can hold up to 4 cans of paste at the same time, and consist of a factory pre-set speed to roll the cans at 23 revolutions per minute for paste uniformity. Rolling Epoxy/Solder paste paste on a roller insures a homogeneous paste at all times and prevents solid-state of semiconductor, thereby insuring functional and rheological stability.