Review on Lasenersm 4-Pack 2.53oz /75ml Refillable Roll-On Bottles - Plastic Rollerball Containers for Essential Oils, Perfumes, Balms - Leak-Proof, Reusable, DIY Thin-Waist Style by Amanda Anderson

They are a bit cheaper than I thought. The ball is smaller than I thought. One of the bottles had a hole in the bottom (see photo). Looks like a manufacturer defect as there is no defective part in the box. As others have said, probably not a good idea for using when traveling, the lid isn't very secure. I don't think it's worth returning them for someone with a hole, I'll try that for my app and see if it works. I will be using this for my grandma's liquid pain cream to make it easier for her to apply as she cannot use syringes due to hand pain/arthritis. I will update with results.