Knife Sharpener - TOOGOO(R) 10000# 3000# Grit Knife Razor Sharpener Stone Whetstone Polishing Tool Two Sides Red+White 100% Brand new and high quality A fine-grained whetstone lubricated with oil, used for fine sharpening The Ruby sharpening stone and Agate Stone, For Polishing, Sharpening Can make mirror surface, mirror finish The Ruby Sharpening stone is made from sintered crystals of synthetic ruby