Description: This oil cup cap is a great replacement to replace your old oil cup. This oil cup is used to continually drip the oil for lubrication. Ensures Firm connection, not easy to shift. Made of brass, anti-rust and long-lasting. Suitable to use for the mechanical joint to keep it smooth. Specifications:Thread Size: M5x0.8Material: BrassDiameter: 7mm / 0.28 inchTotal Height: 9mm / 0.35 inchPackage Content:4 x Oil Cup Cap