The STIHL 61517020102 is a genuine OEM left blade designed for specific STIHL ride-on mower models, including the MT 745 and MT 780. This high-quality blade is engineered for durability and efficient cutting, providing a clean and even finish. With a length of 485 mm, width of 50 mm, and a thickness of 4 mm, it features a central hole diameter of 16 mm and two outer holes with a diameter of 8 mm, spaced 65 mm apart. This blade is crucial for maintaining the optimal performance of your STIHL lawn tractor.