The Dutch Crown Domeless Nails are expertly hand made by the master lampworkers of Amsterdam Glassworx.
These nails are made from premium quality Schott-Duran borosilicate glass and shaped to fit male connections from 19mm - 23mm. The nails feature a recess in the top which means you do not need a vapor dome.
Like all the Amsterdam Glassworx range, each piece that leaves the workshop is annealed for a full 24 hours to make it incredibly durable, then tested for strength and quality. A Glassworx glass concentrate nail is an essential for the concentrate connoisseur.