The Nexus Shower Douche Duo Kit for advanced users 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. Rippled nozzle: Insertable length 15cm.Shaft at widest point 3cm. Classic nozzle: Insertable length 12.3cm. Shaft at widest point 2.6cm.