[ Product Details ] - Material: Plastic; Color: Black; Cap Inner Diameter: 52.5mm Suitable for 51-53mm Fluid Bottles;[ High Quality ] - The main material is made of high quality automotive grade plastic, which is more durable, anti-corrosion, can be used for a long time and easy to clean.[ Universal to fit ] - The cover is universally suitable for cleaning fluid reservoir caps of the same inner diameter.[ Easy to Install ] - Pull out the old cap directly, push the plastic ring of the new cap onto the neck of the neck, and press the cap on the mouth.[ IMPORTANT NOTE ] - Please confirm that the diameter of your car washer bottle cap is similar to this product (diameter error is 1-3mm) before purchasing.