1. Professional mini inline lubricator for grease nipple. 1/4" NPT. 2. Clamp between tool and air hose to lubricate the tool during use. 3. Operate the tool more easily and efficiently, thus extending its service life. 4. High performance, not easy to rust and corrode. Specification: Material: Aluminum. Color: Gold Temperature: - 20 ~ 105. Dimensions: Caliber 22×12mm / 12×6mm Length 55mm. Weight: Approx. 84 grams. 1 Mini inline lubricator for 1/4" NPT grease nipple. 2. Connection between tool and tire tube