Chenier or Tube is most commonly used for hand made settings though can be used in various applications such as sleeves, hollow earrings, washers, items which require a hollow inside.
Chenier/Tube is made in a continuous caster which provides a seamless tube. It is available in sizes in the charts below. Stock is held in sterling silver, 18ct yellow and white, though other alloys are available on request with a 3 week turnaround time. As per the charts below, there are also various sizes available (including some square tube).