The XR Brands Penis Pump Cylinder features a 2.25-inch diameter and is crafted from high-quality, industrial strength crystal clear acrylic, ensuring durability and visibility. The tapered design matches the natural anatomy for enhanced comfort during use. Each cylinder is equipped with a state-of-the-art air valve that allows for quick and easy disconnection from the pump while maintaining pressure inside the cylinder. This specific model measures 9 inches in total length, making it suitable for most users. Cylinders are sold as single units. Country of origin: China.