Fluidmaster Flush 'N Sparkle Refill Bleach Cartridge is a cartridge designed specifically for the Flush 'N' Sparkle toilet bowl cleaning system. This refill cartridge delivers over 1000 bleaching flushes, ensuring long-lasting cleanliness and freshness for your toilet bowl. The product comes in a convenient 2-pack box, providing excellent value and ease of use. Each cartridge is built to maintain effective cleaning performance throughout its lifespan, making it a reliable choice for maintaining a sparkling clean toilet. Model Number: 8302P8