1Cylinder Hone Stones: Made of selected materials, ensuring stable performance, remarkable grinding efficiency, and durability for long lasting and hard surface finishing results. 2Enhanced Engine Performance: Uniformly sized stone particles effectively remove metal protrusions inside the cylinder, leaving a smooth surface to enhance engine performance and extend its lifespan. 3Easy Installation: These cylinder hone stones can be easily inserted into the three jaw cylinder hone tool, and can be conveniently disassembled and stored when not in use. 4Efficient Operation: The structure and composition of this hone stone enable quick and efficient operation, saving time and energy during engine maintenance tasks. Efficient tool for both professional mechanics and DIY enthusiasts. 5Versatile Application: The engine cylinder hone stone is versatile and suitable for a wide range of cylinder honing tasks in various engine types. This makes it an invaluable tool in any mechanic's toolkit. 3 x Engine Cylinder Hone Stone 3 x Retaining Clip