The COLT Master Cleanser from California Exotic Novelties is not just a tool for cleaning but it is also a fun item that you can use to play doctor with. Made with PP, ABS, PVC, and Silicone, the unit is body safe and phthalate free. The measurements on the side are universal so conversion is not required. It can hold as much as 3.5 ounces of your favorite liquid. The flexible tip makes it easy to insert and it is also has an easy to pull handle. Clean up is also a breeze because you can disassemble it. Take it in the shower or wet areas and do not worry about the moisture, it is waterproof. It has a silicone tip so water based lubricants only.