Being the tool holder for the cutting body, the said cutting body cooperates, the fastener (41) with, this and at the same time the based holder (15) the tool holder which can be installed is offered by with the stop section which has extended to the direction of the tool holder with plane form. It can obtain the secure positioning fixing for all motions which parallel to three axes of spatial system of coordinates, the stop section of plane form the plane surface part (19 and 21) is divided the concave section which was processed (23) by, the concave section (23) as the based holder (15) from the fit body which projects (25) the pedestal in order to accommodate is formed between these plane surface parts, the concave section (23) the wall the fit body (25) the support surface of for the sake of (31 and 33) forms. Each stopped each support surface and, in order to become the section and vertical plane, was materialized to stipulate the plane surface which differs, displacement power and the twist power which it occurs with cutting force the based holder (15) the fit body (25) it has reached the point where it conveys.
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