The STIHL 11157909906 Annular Buffer is a genuine OEM replacement part designed to absorb vibrations in STIHL chainsaws. This crucial component helps to reduce operator fatigue and improve handling by isolating the engine from the handles. Made from durable materials, it ensures a secure fit and long-lasting performance, maintaining the original equipment's vibration dampening characteristics. It is compatible with a range of STIHL chainsaw models, including the 028, 034, 036, MS 280, MS 340, MS 360, and MS 360 C.