Description: This oil cup cap is a screw-on type oil cup cap, male thread ensures firm connection, not easy to shift. This oil cup is used to store lubricating oil and drip the oil dripping to parts for lubricating. Made of nickel-plated carbon steel, corrosion-resistant and anti-rust. Suitable to use for the mechanical joint to keep it smooth. Specifications:Thread Size: M6x1Material: Chrome-plated Carbon SteelTotal Size: 25mmx18mmx10mm / 0.98"x0.71"x0.39" (L*W*H)Package Content:2 x Oil Cup Cap