For very hard working conditions special specifications with Zirconia alumina (ZA) are available.
Cut-off wheels with side-reinforcements (shape 41B) for higher side load and for cutting stone are also available as well as
wheels with centrally inserted (one or more) reinforcement pieces (shapes 41CD, 41 C2, 41CD2, 41C2D2). Wheels thus
designed are used when side-burning of the material at cutting-off smaller diameters and at offhand cutting is to be avoided.