●Ideal replacement for the original part - this cartridge holder block will allow you to easily replace your original part if it is lost or damaged. It also comes with a spa filter cartridge ●Your best ally to keep your spa water clean and healthy: the cartridges help remove dirty particles from your inflatable spa. However, we advise you to clean the cartridge with water jet every week ●STURDY & DURABILITY GUARANTEED - This block is made with thick, well-resilient materials (ABS) to form a strong and durable accessory. They can withstand high pressure and corrosion of high capacity chlorine ●Correct price-performance ratio: these filters are carefully designed with thought out shapes and designs to offer you high quality products at competitive prices, unrivalled ●We are committed to 100% satisfaction. At NETSPA, we believe that an excellent product can only be ensured by excellent customer service. If you have any questions about the products, please feel free to visit our website.