The Shapton Glass Stone HR 4000 Grit keeps your blade super sharp and are ideal for resharpening dull blades.
Shapton glass stones are known for their exceptional quality, durability, and ease of use. The abrasives are extremely uniform, meaning the abrasive encountered with the first pass of a blade will be the same as the 5000th pass.
Each stone is composed of a 5mm tempered glass backing plate fused to a 5mm thick stone. Shapton sharpening stones are made with finely graded ceramic cutting media that requires less flattening and lasts 4-5 times longer than most water stones.