The STIHL Tune-up Kit is specifically designed for BG50, BG55, BG85, SH55, and SH85 handheld leaf blowers, providing the necessary components for a complete engine tune-up. This OEM (original equipment manufacturer) kit includes all the parts needed to keep your 2-stroke engine running smoothly, with power sourced from gasoline. With one kit included in the package, this product is perfect for maintaining your STIHL handheld blower to ensure optimal performance and efficiency.