I have many Dewalt products and they are great. This hole saw kit is complete junk. Consistently bad quality. I sent mine back for a refund because it was incomplete, the mandrels were missing parts and the 1 3/8 and up hole saw mandrel was not even included. The mandrels could not be "quickly changed" and did not have the guide lugs of the standard mandrel. Cannot be used without buying or borrowing mandrels from my other Irwin and Milwaukee kits. Dewalt should not allow this inferior product to bear his name.