[Features] ●Grinding power and speed are improved because it is angled and can work on the surface. ●Higher hardness than zirconia abrasive grains and superior toughness compared to alumina abrasive grains, resulting in high grinding power and long life. ●Compared to offset whetstones, it is quieter, has better grinding power, and leaves a cleaner polished surface. ●Tapered type that can cut a wide area, and the amount of grinding has been improved.