Countertop or Undersink 5 stages Touch Panel Micro-computer controller R.O. System (with tank inside) 1st: ST-05S 5 micron PP filter (transparent) 2nd: ST-33 GAC filter 3rd: ST-CTO Carbon block filter 4th: ST-RO50 50GPB RO membrane 5th: ST-34 GAC post filter With booster pump, CE transformer 220v UK three plug (All in universal brand) Accessory White PE tube x 5meters AB-3-4S: feed water connector short, ABV-2-2B: 1/4\" brass ball valve LS-BSV6: C type needle valve, 1/4\" quick OD ACW-2-Q (1/4\"): 1/4\" Quick OD Drain clamp PR-P14-40: 40psi plastic pressure limiting valve