Among the drills myself I can not say, but the supplied box was already broken in. The Boherer in the cheapest Hartplastikbox were not even sent in a cardboard box, but in a padded envelope. This has the box did not survive and the hinge was broken on one side, all the drills were wildly in the package. Until I ultimately got the box taped me all drills are again flying through the area and my pulse was 180 ...