10 ml Thick Glass Roll-on Bottle - Cobalt Blue, Stainless Steel Roller Ball and Silver Aluminum Cap, Pack of 6

These bottles are good, and the metal rollers are good. None of them were damaged or cracked upon arrival, and they are a great size. However, the lids do not fully close with the rollerball attached. I initially messaged the company, and they immediately sent me new lids. That's why I gave 4 stars instead of 3. The actual bottles seem to work fine as long as you always keep them upright. I do think that some of my oils evaporate, but that is just a theory of mine. If the lids screwed on correctly, these would be fantastic.

I just started using these for essential blends, and the oils are leaking out the top from the roller ball. It makes a pretty big mess. I guess the roller ball needs to be a tighter fit in the plastic so it does not leak through.

Use these bottles all the time for my DIY products. They are always great, bottles are in great shape and the roller balls never stick or get any type of film build up of on them like other products I have purchased making it difficult to impossible to use.

These were okay - but some of the bottle lids didn't go on perfectly straight - and they leaked. No matter how I tried to get them on straight - so... not sure I would purchase again in the future.

We have started mixing our own essential oils and this bottle is great.

Roller ball attaches perfectly. However, the screw top lid doesn't fit tigihtly, hence the 4 stars.

Mild leaks if it isn't closed really snug. Otherwise really good.

The lids do not fit tightly, but all in all, a great product.