While it may be simple this is one of the key pieces of equipment in the UV doming procedure. This 2 oz. bottle is easy to use and if properly stored, never needs cleaning. It also replaces about $700 worth of complicated dispensing equipment, yet it is just as effective and easier to use. The Luer-Lok tips come in various sizes, the bottle comes with 2 sizes that are the most commonly used in UV doming.