The Space Cruiser Bowl Piece by Empire Glassworks features an artistic lampwork melted on borosilicate glass. This stellar slide is designed on a 14.5mm male joint, infused with dichroic glass just like the rea detail that fires this piece to life. Lets take a cruise into the cosmos.. Features: Intricate Lampwork On Borosilicate Glass 14.5mm Male Joint Infused With Dichroic Glass Glow In The Dark Accents