The Nexus Shower Douche Duo Kit for beginners contains 2 silicone nozzles shaped for comfort and the ultimate clean. Simply unscrew your shower head and replace with your chosen nozzle to experience a thorough intimate cleanse. C shaped nozzle: Insertable length 11.5cm. Shaft at widest point 3cm. Classic shaped nozzle: Insertable length 11.1cm.Shaft at widest point 2.7cm *Compatible with most shower hoses.