Size: 100% brand new high quality grease nipple, 1or4" quick connector or plug connector can be installed at the tail. 1or4" BSP head thread is generally suitable for air tool inlet interface general. Professional manufacturing: small size, light weight, lightweight and portable, very easy to carry. Professionally crafted and manufactured under strict quality control standards, the oil filler can automatically refill from time to time to lubricate the internal parts of the air tool, reduce manual oil filling, reduce the wear and prolong the service life. Easy to install: tighten the screws with oil, simple operation and convenient use. Simply remove the old one and put the new one on without modification. Installation is simple and can be done in minutes. It is your ideal accessory. High quality materials: high quality zinc alloy materials, copper-plated. Stable performance and high reliability. High hardness. Precision machining and rolling, high durability. Corrosion resistant, sturdy, size stable and durable.