This 10 piece set contains only the best quality HSS polished and grounded 2.35mm (3/32″) drills in custom-made slide top box which releases the chosen drill. Not to be confused with similar looking sets containing cheap inferior quality drills. Consist sizes: 0.5, 0.6, 0.8, 1.0, 1.2, 1.3, 1.5, 1.8, 2.0, 2.2mm.