Material selection: Made of brass material, durable, corrosion-resistant and rust-proof. Easy to install: takes just seconds and attaches to most types of air tools. Check easy: 1/4-Inch BSP Mini In-Line Oil Lubricator. Thanks to the clear polycarbonate cover, you can clearly see the oil condition so you can refill it promptly. Work efficiency: 1/4 BSP air tool oiler provides continuous lubrication for air tools. The oiler can extend the service life of air tools and improve the efficiency of air tools. Contact Us: We guarantee the quality of our fuel dispensers and our customers’ shopping experience. If you have any questions, please feel free to ask us and we will solve it for you immediately.