Fit: M5x52mm chain adjuster screws compatible with Husqvarna, compatible with Stihl chainsaw models. Smooth Chain Adjustment: Easily adjusts chain tension to ensure safe, efficient cutting performance. Quick Replacement: Ideal for replacing worn or stripped tensioner screws—restores proper chain control. Easy Installation: Simple to install with basic tools—no need for special equipment or professional help. Package: Includes 2 tensioner screws, perfect for quick fixes or keeping spares in your toolbox., Manufacturer: EMSea