[Pack of 10 items] This carburetor adjustment tool kit features 10 essential tools: 21-tooth spline screwdriver + 7-tooth spline screwdriver + single D-bit screwdriver + single small D-bit screwdriver + double D-shape screwdriver + Pac-Man screwdriver + small-bit Pac-Man screwdriver + hex screwdriver + flat screwdriver + six-point (star) screwdriver. It provides more carburetor adjustment tools than any other brand. [COMPATIBLE WITH the majority of 2-stroke engines]: suitable for chainsaws and various equipment utilizing splined adjustment screws from multiple brands. [Excellent Quality and Carrying Case] - The bits are constructed from robust stainless steel, with an ergonomic handle and a highly durable metal rod. This kit comes with a stylish carrying case for easy protection, storage, and organization of the 10 tools. Additionally, needles and cleaning brushes are included to help remove blockages that may arise in the narrow parts of your engine's carburetor. This set of carburetor adjustment tools will be an invaluable companion for maintaining and adjusting 2-stroke engines in daily life. Correct carburetor adjustment allows for fine-tuning of engine idle speed, optimizing the fuel and air mixture, and enhancing engine performance. [Warranty]: We prioritize delivering a high-quality carburetor adjustment tool and ensuring 100% customer satisfaction for enjoyable shopping experiences. Please feel free to reach out with any inquiries.