Compatibility built-in:100% Backwards compatible with previous units. AquaBlade scraper fits the old blades, AquaBlade blades fit the old scraper.Blades full of sharp ideas:Constructed of 316 stainless steel, the AquaBlade metal blade is both strong and rust resistant so removing that stubborn coralline algae is a breeze.
This auction is for 1 replacement "M" aquablade blade.