The Honing Rough Stone Set is used to refine and smooth internal cylindrical surfaces during maintenance and reconditioning tasks. It works by gently removing surface irregularities left after machining or wear, allowing the internal bore to achieve an even and controlled finish. The stones apply uniform contact pressure against the surface while rotating or stroking inside the bore. This controlled abrasion improves surface texture and prepares the bore for proper sealing and fitment.Attributes:• Assists in restoring bore condition after extended usage.• Contributes to smoother movement of components within bores.• Provides consistent surface texture across the full bore length.• Supports bore size from 63 to 70 millimeters.Applications: The Honing Rough Stone Set is used during servicing tasks to refine internal cylindrical surfaces, allowing proper surface finish and clearance for components operating inside bores.