... roll in, roll out, roll up, roll down, one roller fast one roller slow freely etc 2). Normal handpiece and 2 plastic rollers ... treatment, roll in, roll out, roll up and one roller fast and one roller slowly, can change directions directly and freely.2. cellulite ... /Suction Frequency :0.1—5Hz Roller direction: roll in, roll out, roll up, one roller fast and one roller slow and adjustable freely Rated ...