A diamond blade is composed of a circular steel core and the diamond impregnated segments. The segments are seperated by slots in the core.
These slots assist in cooling the blade during operation by allowing water (wet cutting) or air (dry cutting) to flow between the segments. The segments or rims are a mixture of diamond powder and metal powders. The diamonds are industrial diamonds of different sizes and qualities depending on the material to be cut as well a the blade type.

What's in the box
3 x Tork Craft - Diamond Cup Wheel 115mm x 22.23mm Turbo Cold Pressed