Our granite diamond silent blades are designed to wet cut most common types of granite. The sandwiched segments allow sharp cutting at low noise level without chipping. We have most common sizes on the market -- 12", 14", 16" and 18". diamond silent blades are made in CHINA with titanium coated diamond to allow extra long life and fastest cutting speed. Segments are 20mm height. new silent diamond allocation blades represents the latest technology in diamond blade manufacturing with evenly allocated diamond contents in the segment to achieve longer blade life.