They almost never leave a review but this Dewalt flip drive will piss anyone off after using it. I bought something similar about 15 years ago (the only difference is that it's a size #8) and to this day it works perfectly. However, this does not sit exactly and wobbles a lot, especially when the drill side is extended. In addition, the disc slips out of the inserted part after repeated use. The locking mechanism fails after a few uses. From a technical point of view this is a disaster and Dewalt should be ashamed of such a drop in quality.