Features 1.Powerful Function: Cylinder hone stones enhance engine performance by effectively removing metal protrusions inside cylinders, leaving a smooth surface to improve engine performance and prolong its lifespan. 2.Engine Cylinder Hone Stones: Made of high strength materials, ensuring stable performance, excellent grinding performance, and durability for long lasting use and lasting smooth surface treatment effects. 3.3in Stones: The stones are easy to install, with a length of 3 inches and a width of 10mm, making them easy to insert into your cylinder hone tool and convenient to remove and store when not in use. 4.Wide Application: Replacement for engine cylinder hone stone can be used with other engine cylinder hone stone mounts for versatile applications, practical repairing tool. 5.Efficient Operation: The structure and composition of this hone stone enable quick and efficient operation, saving time and energy during engine maintenance tasks. Specification Item Type: Cylinder Hone StoneMaterial: Metal + Grinding StoneSize: Approx. 3 inch / 7.62 cmFitment: Can use with other engine cylinder hones stone mounts Package List 3 x Cylinder Honing Stones3 x Screws