concave saw blades normal segmented type diameter from 4"(105mm) -
7"(180mm) for cutting circles or curved line on the slab,
countertops, etc. The protection on the both in-and-out side provide
faster cutting on kinds of hard stone or granite.
Hot Sintered or Code Pressed (Performance
of Hot Sintered concave blade is much better than Code Pressed products,
however cost is also higher).