Features Made with high-grade Tin for excellent polishing. Corrosion Resistant. Perfectly flat and parallel to the surface to ensure great balance and accuracy. Can be used for both pre-polishing and final polishing. Can be easily charged with diamond grit or other suitable polishing compounds Available in the standard 6" and 8" diameters with a 1/2" arbor, these Tin laps can also be custom made in your desired dimensions. Contact us for custom sizes.