Turn your magic wand vibrator for external use, easily into a massager for intimate and internal use. The insert opening of the attachment is 4.3 cm to fit onto heads of all wand massage devices of any brand, with a head of 4.5 cm or bigger. The attachments are made of body-safe TPR / TPE material. It is soft, flexible, very easy to clean and perfect to use with water or silicone based lubricants.The wand attachment will stretch to fit most wand heads securley.