The STIHL 11477909100 Hand Guard is an original equipment manufacturer (OEM) replacement part designed to provide essential protection for the operator's hand during chainsaw operation. This genuine STIHL component is critical for safety, helping to prevent accidental contact with the moving chain and deflecting debris. It ensures a precise fit and reliable performance, maintaining the integrity and safety features of your equipment. This hand guard is compatible with various STIHL MS series chainsaws, including models such as the MS 261, MS 271, MS 291, MS 311, MS 362, and MS 391.