The great thing about stainless steel is that it can have many attachments that can come with it to enhance your sexual experience, but they are mostly for BDSM lovers.
A common one in stainless steel anal sex toys is a handle that can be cranked to make the head spin around for an ultimate orgasm! There are other technological advantages to stainless steel anal sex toys, but they are very dangerous for casual and first time anal sex toy users.