The Stihl 11331605450 is a genuine OEM brake band assembly, including the sprocket, designed for specific Stihl chainsaw models. This critical component ensures the proper operation of the chain brake mechanism, providing essential safety by stopping the chain quickly in the event of kickback. Manufactured to Stihl's high-quality standards, it guarantees a precise fit and durable performance, maintaining the safety and efficiency of your equipment. This part is crucial for maintaining the integrity of your chainsaw's safety system.