Compatibility: Designed specifically for use with a wide range of chainsaw models compatible with Stihl, including chainsaw models compatible with Stihl MS271, MS290, MS291, and more. This guide screw set is compatible with over 70 models of chainsaws and pole pruners compatible with Stihl. Use parts engineered to meet or exceed original manufacturer specifications for compatibility and reliability with your equipment.Components: Each guide screw and adjusting screw set in this package is crafted from materials, withstanding the rigors of regular chainsaw use. The special large nuts are designed to provide an optimal fit, helping maintain the proper tension and alignment of the guide bar for operation and cutting efficiency.Maintenance: Regular maintenance of your chainsaw or pole pruner compatible with Stihl is crucial for achieving top performance. This guide screw set is for replacing worn or damaged fasteners, maintaining your equipment in peak condition. Replacement of these components can help prevent further wear on other parts of your saw, reducing the chances of costly repairs down the line.Installation: You do not need to be a professional to use these components. The design of the guide screws allows for straightforward installation, ensuring that even novice users can replace their existing parts without hassle. Keep your chainsaw running smoothly with this replacement solution for your equipment.OEM replacement: This guide screw set includes OEM codes 11270071003, 11276401900, and 11276642200, ensuring that you replace your parts with the quality available. By choosing components, you can trust that you are enhancing the performance and longevity of your chainsaw compatible with Stihl, ensuring reliable operation every time you take on a cutting task.