Universal Replacement Set for Undersink Reverse Osmosis Water Purification Systems. OVERVIEW: Fit 5 Stage Reverse Osmosis Water Filters Set: – 10″ Sediment Filter, 5 Micron. Removes dirt, silt, sand, rust and scale particles. – 10″ GAC Granulated Activated Carbon Filter. Removes chlorine, chloramine, VOCs and etc. – 10″ CTO Carbon Block Filter. Removes chlorine, chloramine, VOCs, bad taste and odor, 10 micron – 50 GPD Membrane , USA made – 10″x2″ inline Omnipure (made in USA) T33 post carbon filter with 5 micron rating. We will enclose 2 of elbow fitting (1/4″ thread x 1/4″ tubing). If you need different fitting, please, contact us before or right after purchase. High quality guaranteed. Service life: 6-12 months. We highly recommend to change filters every 6 months, inline filter – 12 months, membrane – 3 year. ++++++++++++++++++++++++++++++++++++You can add following items with main order. You can enjoy free shipping with main order.Please contact us before making purchase. Fitting (all Quick Connect):elbow 1/4″ thread x 1/4″ tubing ($.70 ea)straight 1/4″ thread x 1/4″ tubing ($.70 ea)elbow 1/4″ thread x 3/8″ tubing ($0.90 ea)straight 1/4″ thread x 3/8″ tubing ($0.90 ea)elbow 1/8″ thread x 1/4″ tubing ($.70 ea)straight 1/8″ thread x 1/4″ tubing ($.70 ea)elbow check valve ($1)Union fitting: 1/4″ tubing x 1/4″ tubing ($.70 ea)Tee: 1/4″ thread x 1/4″ tubing x 1/4″ tubing ($1)Tee #2: 1/4″ tubing x 1/4″ tubing x 1/4″ tubing ($1) Other parts:Auto shut off valve, $3.50Wrench for prefilter housing $2Wrench for membrane housing $2.50Black Tubing cutter $4New standard RO faucet $8Restrictors 400, 450, 500, 550 ml ($2.50 ea)Drain valve ($2)White tubing 10 ft, $4 eaOrp-Alkaline Post filter (3-in-1, 10″x2″, $19.90Mineral inline Post filter 10″x2″, $17 Shipping (Domestic and International): We ship within 1 business day via USPS Priority Mail. Returns/Exchange: Only of defected. Warranty: Warranty: 30 days.