These High Temperature plumbing packages include 1/2 inch NPT x 25 foot long insulated tubing which can be used with Thermo Scientific ThermoFlex 900, 1400, 2500, up to models 10000 recirculating chillers with P1, P2 or T1 pumps. These insulated line sets keep the chilled fluids cold as they circulate between the chiller and product. This plumbing package comes with hose barbs and clamps, Thermo Scientific Part number 611000000004