1. Perfect Fit & Compatibility Compatible with Stihl BGA56, BGA57, FSA56, HSA56, HLA56, HTA50, MSA120, MSA140. Replaces part number 4522 430 9800. Please double-check your model before purchase. 2. Secure Battery Locking Function Designed to firmly lock and release the battery in place, ensuring safe operation and preventing accidental power activation. 3. Durable & Wear-Resistant Material Made from high-quality, impact-resistant plastic for long-lasting performance. Built to withstand frequent use without cracking or breaking. 4. Ideal Replacement Part Perfect solution for worn, broken, or malfunctioning battery latch levers. Restores proper battery connection and tool functionality. 5. Easy Installation & Quick Repair Simple design allows for fast and hassle-free installation. No special tools required, ideal for DIY maintenance and repair.