The Cerax two-sided 6000/1000–grit combination whetstone is our most popular combo: an excellent choice for establishing or repairing an edge, and lots of folks stop at 6000-grit for their final edge. The combo stones are cost effective – two stones for the price of one. These stones are fast, developing a reputation for sharpening quickly, yet with good feedback and they maintain their shape with minimal maintenance. Cerax stones do require soaking – a good rule of thumb is to submerge them in water until the air bubbles stop. Each stone comes in a plastic storage case that can double as a sharpening platform, and also includes a cleaning stone. Instructions for use in English are included with each stone.