Jacobs Chuck 0085210 CAT V 40 Shell/Face Mill Tool Holder 1-1/2-Inch Diameter with 2-1/5-Inch Projection,Jacobs Chuck,0085210" /> Balanced to 8,000 RPM Provides more accurate, rigid tool holder-to-spindle mount tapers Taper grounded to AT3 or better Easy change/setup and low maintenance Through spindle coolant