Drills and bits while sawing / twisting, do not lick and do not become dull. But to the "suitcase" a lot of questions. 1. The case is about the size of a small book, but no pen/holder is included. 2. This case has no loops. Even plastic ones. Even the simplest ones. The halves are connected by a strip of very thin plastic. There are vague doubts that such "loops" will not last very long. 3. All bit/drill holders in the case are not secured inside in any way. The holders are dense rubber, which is kept inside the case only by friction and does not have any axis of rotation. Ie. "picking out" drills from there is also not an easy task, because. the force of friction does not allow the holders to recline freely to remove any equipment.