High Precision End Mill HoldersCAT40 Precision End Mill Holders L1 d2 d1 AT3 precision ground taper Features • High precision bore H5 is best in industry • Balanced to 15 000 RPM at • Taper ground to AT3 for maximum spindle contact CAT40 Rigid Reach End Mill Holders Part No Description d1 L1 d2 RR CAT40 x 1/8 5 1/8 5 78