- Miller files are used for smoothing the rough edges of the bone. - It is a double-ended commonly used in dentistry. - Miller #21X Crosscut. - Small end is 5.5 mm wide and the large end is 7.5 mm wide. - Standard Universal Handle - 1/4”/6.4mm Diameter with a segmented knurled grip to provide excellent control. **For further product information, please contact Chat Support**