The DCT 11 Piece Set of Supports offers the option to vary the height of the support surface. The individual supports can be used to compensate for 1-100mm height differences. The lowest grading of the supports is 1mm, in order to achieve the intended height precisely. The measurements are specified on the particular discs. Aided by the O-rings, the Supports can be adjusted easily and precisely. The Set of Supports can be universally used in all boreholes of system 28. The M10 thread on the inside of the supports enables fastening of customer-specific components or prisms.