The S&R double-sided sharpening stone (18 x 6 x 3 cm) is ideal for professionally sharpening kitchen knives and other cutting tools. With a dual grit of 1000/6000, this whetstone allows for both coarse sharpening and fine honing of the blade. Made from durable, 100% corundum, this knife sharpener promises a long service life. The sharpening stone also comes with a secure, non-slip silicone holder, making the sharpening process safer and more controlled.