Pneumatic automatic oiler technical parameters： Connector size: 1/4 internal thread +1 / 4 external thread Length: 60mm Material: Solid brass construction Color:yellow Package include: 4 x Lubrication for Air Tools Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.