While Kattex Tomato Slicer blades are designed to remain razor sharp for a long time, if your chefs are having difficulty getting clean slices with little effort, it may be time to replace your blades. This stainless steel tomato slicer replacement blade assembly is for Kattex 1/4" tomato slicer models TTS-3 and TTS-250. The replacement blades have a razor-sharp serrated edge design that will slice up to two dozen hard or soft tomatoes in one minute. The tomato slicer blade assembly is constructed of corrosion- and rust-resistant stainless steel that's easy to keep clean, and is NSF listed.