The Altoz 2500331 Dual Blades All Terrain Decks in black color are designed for enhanced performance in both grass and mulch. With a set of two units, this model is compatible with the TRX/TSX 61/66 series, providing reliable and efficient cutting capabilities for your lawn care needs. Ideal for outdoor maintenance, these blades are a perfect addition for those looking to maintain a well-manicured garden or yard.