The 5 x 2 pack 4.3kg Harveys block salt mini curve is a natural ion-exchange filtration system suitable for both commercial and household use. With a capacity of 1L per block, this under-sink water softener is compatible with various brands such as Samsung, Aqua Optima, GE, and Brita. The white blocks effectively remove limescale contaminants, providing clean and soft water for your daily needs. Manufactured in the United Kingdom by Harvey, this sustainable water filtration solution is a convenient and efficient way to improve the quality of your water supply.