- Penis growth of up to 30% length and 20% girth - Straighten penis curvature - Bigger， stronger and healthier penis - 8 inches (20.3 cm) maximum device length - Clinically proven method - Permanent gain - High quality materials Package:Penis Extender x 1Four Extension Rods x 1Silicon Tube x 1English User Manual x 1 English exercises CD x 1Cool Box x 1