New 20pc Micro-Drill Bits Index 61-80 w/Metal Box Drill bits fit any rotary tool ; HSS quality steel Recomended to be used with a push drill or pin vice ; The set comes in a black metal box Used for Making Holes in Soft Metals, Plastics, Beads Etc.; The latest version of the set might vary slightly from the original manufacturer from time to time. The set includes the following sizes: #80 (.0135"); #70 (.0280"); #79 (.0145"); #69 (.0292"); #78 (.0160"); #68 (.0310"); #77 (.0180"); #67 (.0320"); #76 (.0200"); #66 (.0330"); #75 (.0210"); #65 (.0350"); #74 (.0225"); #64 (.0360"); #73 (.0240"); #63 (.0370"); #72 (.0250"); #62 (.0380"); #71 (.0260"); #61 (.0390");