This is the recommended accessories to get you started using the Brewtools pro systems. The package includes an efficient counterflow chiller, an extra 3-way valve to make you able to choose if you return the cooled wort to the tank creating a whirlpool or pump directly to the fermenter. A third sensor gives you exact measurements of the wort returning from cooling. The necessary fittings and accessories are also included. Included: 1 pcs 3-way ball valve, TC34mm DN15 1 pcs Dip tube, short 1 pcs Counterflow Cooler, Pro 1 pcs O-ring, Viton, 18x14x2mm 5-pack 3 meter Silicone Tube 16x25mm, clear 2 pcs TC Gasket, 34mm, DN15, 5-pack 2 pcs TC34mm to 12mm hose barb 1 pcs TC34mm to 19mm hose barb, sensor holder 4 pcs TC34mm to 19mm hose barb 1 pcs Temp. Sensor, inline, M10 6 pcs Tri Clamp, 34mm 1 pcs TSP, 100g For User Manuals and support, please follow this link to Brewtools Docs.