30-PIECE DRILL SET 3/32" SHANK Ordinarily, drill head size & shank size match. The problem is that micro-motor tools, Dremels & flex-shaft handpiece collets accept standard sizes. A typical 3/32" collet only accepts a 3/32" drill. So unless you need a 3/32" hole you are out of luck. Finally, a mini drill set that fits standard 3/32" collets! Tough HSS steel & precision twist bit grinding hold up to wood, mild steel, stone. Set includes 30-precision made HSS steel mini twist drills, 2-each of: .5mm – 2.3mm. Includes: plastic organizer box with sizes marked for slots. Drill length: 1-3/4". 627020 30-PC. DRILL SET