What are “dome-less” nails?

Though most dabbing “nails” require what’s called a glass “dome,” dome-less nails are metal pieces that don’t demand a glass hood. Instead, vapor is secreted directly from the nail itself through a network of tiny holes. Dome-less nails appeal to some dabbers because there’s one less glass piece to clean or heat. And E-nails are the next step in dome-less dabbing, because, though expensive, they eliminate the need for both torch and dome. E-nails enable improved vapor flavor and mitigate many of the risks, like hot glass and nails, involved with dabbing.