In the past few months, I have read a few articles here on Zity about the use of metal enema nozzles. So, my curiosity was peaked and being a serious enema fan, I started looking and buying different sizes and shapes of these metal goodies. I found some to be so preposterously huge that I wasn't sure they would work. patience and lube do their work as even the XXL model was inserted. WOW! I know it was not in too deep, but with the right alignment, I did get it into me. I believe this was a one-time event. The other nozzles are a different story. When warmed by the water they give you a feeling that is different from the other non-metal nozzles and feel very good inside of me. Perhaps others out there will share their "taste" for metal? MRay.