maximum taper accuracy by using constantly controlled and calibrated measuring equipment. ·absolute accuracy of fit and optimum radial and axial run-out. ·extreme load-bearing capacity due to the use of tempered material and the best heat-treating processes. ·optimum surface quality and associated long-term dimensional stability and precision, as well a spindle protection as a result of finished surfaces. ·balanced models for improved grinding results and spindle life. ·slim profile for optimal grinding wheel clearance and selection flexibility ·excellent concentricity and run-out properties ·variety of clamping diameters available ·available with a cylindrical shank or integrated in an sk50 holder