Review (4/5): Exactly what I needed, but a little disappointing
***Edited to remove a star for leaking. So bummed! I lost almost a full bottle of a very expensive blend (and a portion of several others) because several of the bottles had been leaking the whole time they were in the case. When I tested and turned upside down, large drops of oil came out freely from around the roller ball. I found more sturdy rollerballs from another seller that fit these bottles and do not leak. I will continue to order the bottles because I love the color. It just stinks that I'll also have to make a separate order for quality rollerballs. I'll also have to order more labels, as the leaking oil pulled them all off. :-(
The bottles are great for making EO rollers. The roller ball glides smoothly. One thing that I noticed is that when the top is screwed on completely, it looks crooked - almost as if the lid is not threaded correctly to fit the bottle. The neck of the bottle is not very strong. One bottle fell from the nightstand onto the carpet and broke. I will need to be sure to keep these in a case, for sure. Overall, I am happy with them and will order again.