Look deep into this hollow metal anal plug. Use it with a partner to take a peek at your most intimate areas or to see what fits into the tunnel. The nickel-free aluminum alloy allows for smooth insertion, as this anal dilator opens you up. Being non-porous, it can be used with any type of lubricant and can be thoroughly cleaned with warm water and mild soap or toy cleaner. Aluminum alloy, hollow center, non-porous.