The Flipper Edge MAX Stainless Steel Blades (4pk) are engineered from premium corrosion-resistant stainless steel, ensuring durability and effectiveness in maintaining aquarium cleanliness. This pack of 4 replacement blades is specifically designed for use with the Flipper Edge 2-in-1 Aquarium Cleaner (MAX), offering compatibility and seamless integration for continuous maintenance. With their reversible design, these blades provide double the lifespan, maximizing their utility and value. It's important to note that these blades are intended for use with glass tanks exclusively, ensuring optimal performance and longevity.