Diameeter:3.5cm up length:35cm up supply period:from october to next may shiny yellow color,plump,clean,smooth, no pests ,no lotted Medical functions: 1. Promotes urination 2. Lower blood sugar 3. Lower blood pressure 4. antibiotic 5. anti aging: use shan yao, ju hua, niu xi, shu di huang 6. Improves digestive system. Correct pixu condition