This set of four Precision Oiler Pocket Oil Pens are a must-have for any watch enthusiast or model builder. Each pen comes with 7.5cc of oil and is perfect for lubricating small parts. The pens have a slim design that makes them easy to use and store. The set includes 4 pieces in total, making it a great value for anyone in need of precision oilers. Whether you're working on a hobby project or repairing a watch, these oil pens will make your job easier. They are made from high-quality materials and are built to last.