High Rigidity High Precision Significant Difference between KH-E and other stub holders Application Feature Spindle (same as KH-A's) Perfect locking against drawing force High-Precision Collet HDP 4D A 0.01 A High-Precision Collet FDC-AA High-Rigidity on full face contact to spindle Drawing Force Operation Sleeve Note Endmilling Special locking function assures rigid connection to the machine spindle. High precision collet, runout is within 10 microns at 4xD (4 x tool shank dia. distance from nose of the holder). Eliminates axial tension. Diffuses the pulling force caused by climb milling. The low-pitched taper on the operation sleeve secures the holder by the use of steel ball bearings which move readily and are locked into place by the drawing force. Enlarged Locking Function For center-thru coolant feed, please select KH-EC1 or KH-EC2 models.