ITEM NAME:New Amazing 4-Way Universal Chuck Key for Drills Drill Power Presses Nice K5Y5.Suitable for most drills and power tools. 1X Drills Chuck Key. 4 Way Drill Chuck key. The sizes of the chuck keys range from 6mm to 13mm making it suitable for use with most drill and power tools. One tool with 4 key sizes for tightening and loosening chuck.