Comprised of 2 replacement Water Filter Cartridges in a Pack. Kinetico filter cartridge set for all K5 Pure drinking water systems, the Kinetico Reverse Osmosis Plus (KRO ) and the K2 systems. Set contains: 1 x 9461 High Efficiency Carbon/ Sediment Pre-filter Cartridge 1 x 9307 Taste, Odour, VOC & MTBE Filter Cartridge. For use with All K5 Pure, K2 and KRO GX Using the manufactures recommended replacement filters, will ensure you get the maximum efficiency levels from your K5 or K2 Drinking water System as well as the best value for money.