A set of hight quality twist drills that works well and have a sturdy storage case to protect them.<br><br><strong>Features:</strong><br>Straight round shank.<br>Sharp and easy to drill hole.<br>Equipped in a high quality compact folding box.<br>Including 51 sizes in one drill bit set (1.0-6.0mm).<br>Made from nice quality high speed steel for increased durability.<br>Can be used to drill holes on stainless steel, alloy steel, cast iron.<br><br><strong>Specifications:</strong><br>Material: High speed steel<br>Package Weight: 583g / 20.56oz<br>Package Size: 16.5 * 16 * 4cm / 6.49 * 6.30 * 1.57in<br><br><strong>Package List:</strong><br>51 * Twist Drill<br>1 * Case