Microbox HSS Twist Drill Set contains 20 drills of only the best quality HSS ground drills for jewellery and model crafting. The plastic index box keeps the drills securely in place and the sliding top dispenses one drill at a time. You will find the perfect sized drill for all intricate holes in this selection to create your artistic vision!20 piece drill kitSizes: 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, 0.95, 1.00, 1.20, 1.30, 0.70, 1.40, 1.50, 1.60mmHighest QualityModelcraft Microbox HSS Twist Drill Set 20 Pack