[A Good Range of Sizes]Drill set has all the most common bits needs for most home projects suitable for anyone who does home improvements or works with drill bits for a living. When you break one-off, loose one, loan one, you have more back up, when you run low on one size you can reorder that size you used up. [Handy quick change]The set has all the useful sizes for drilling for screws and have a hex end to make changing sizes quick and easy, they also have a nice titanium oxide finish to help with durability. [ and ]The bits are sturdy and cut through wood, metal and laminate. the shank has a hexed end so no need to over tighten the drill collar. [HSS TITANIUM COATING]The set is using industrial-grade materials and HSS construction with titanium coating to help with durability.The shake-free design and staggered cutting teeth precise counter holes and smooth cleaning of the holes. [Easy to store]To increase easier access, a small finger tab on each side of the molded case cover