Description of 🚀 Enhanced Efficiency with PANMAX Double Fluted 16 Inch 8 Inch Material
【Size】:Include 12 hole sizes(3/16", 1/4”,5/16",3/8",7/16",1/2",9/16",5/8",11/16",3/4",13/16",7/8") so you can drill up holes with different diameters, saving your time and efforts to change bits. 【Material】:Made from Upscale M2 high speed steelfor durability , After heat treated and hardness can reach HRC62-63. 【Surface Treatment】:Each drill bit has a Nitriding treatment that adds durability. 【High Quality】:Easy-to-read step rings save time when drilling common holes, laser-engraved marks, offer superb convenience and accuracy, for fast, easy hole size identification. 【UNIVERSAL COMPATIBILITY】: Compatible with 1/4, 3/8, 1/2 electric drills or bench drills, work for sheet steel, metal, aluminum or plastic, designed for drilling on steel plates up to 0.2 in. thickness.