• Solid and durable brass construction. Lead Free.
  • Package include: 10 pcs ferrule sleeve + 10 pcs insert tube support.
  • Size: 4mm Tube OD x 2.9mm Tube ID
  • Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability
  • It can keeps plastic tube from collapsing when tightened. And prevent leakage.


Size: 4mm OD X 2.9mm ID

Material: Brass. The Brass Compression Sleeve creates the seal between the copper, aluminum pipe and the valve housing. Applied to liquid transport or gas transport or some other fields. Easy and convenient to install.