Diamond Saw Blade, DEWALT(R) Series, Blade Dia. 4 1/2 in, Arbor Size 7/8 in, Arbor Shape Round, Max. Blade Speed 13,300 RPM, For Use With Saw Type Angle Grinders, Cutting Type Dry, Rim Type Segmented, Max. Cutting Depth 1 1/4 in, Materials Cut Masonry, Grade Good, Blade Material Steel