The heads are easy to remove but I can't complain that they lost about 10 heads from being pulled off. Also, the drill is rubbish, I have other masonry drills that drill holes in about 10 seconds, while the drill they provided took me 10 minutes to drill each hole and it took me 8. All night I would other drill bits use but they were too big to fit the screws, believe me i tried to use anchor in a hole because the bit i tried was too big. If you buy this set make sure you have the time or find a better masonry bit in the same size.