Drag Chain, also known as energy chain or cable carrier which is widely used in XYZ CNC machines, are guides designed to surround and guide flexible cables and hydraulic or pneumatic hoses connected to moving automated machinery. They reduce wear and stress on cables and hoses, prevent entanglement, and improve operator safety.
It's different from Spiral Cable Wrap, Fabric or Plastic Insulation which is for small pieces of lead wires and can be great on Delta Robot. The drag chain is stronger protection for frequently moving X-axis and it seems that it's not workable on delta robot 3d printers.
Drag Chain: 15*20mm inner diameter 1 meter long, the radius is 28
Inner 15mm*40mm semi-closed drag chain.
Tank Chain is not a bad name.