Hey there essential oil lovers! This is seriously an amazing deal - you get 144 complete roll-on bottle sets that are perfect for making your own custom blends or for small business use. The bottles are made from thick amber glass (0.038 inches thick to be exact) that provides maximum UV protection to keep your precious oils from degrading. They come with high-quality 304 stainless steel roller balls that feel super smooth when you apply them, and the best part? They're completely leak-proof! Each set includes the bottles, roller inserts, and flat black caps that are perfect for putting your own labels on. They even throw in a handy installation/removal tool to make setting these up a breeze. The seller is a retired US military engineer who really knows quality, and these are shipped Amazon Prime so you'll get them fast. At this price for 144 complete sets, it's basically a steal compared to what you'd normally pay. Perfect for essential oils, perfumes, CBD oils, or any other liquid you want to apply roll-on style. They're refillable and reusable too, so you can keep using them over and over. If you're into DIY beauty products or run a small business, this bulk set will save you so much money compared to buying individually!