A pack of 10 rubber O rings, perfect for replacing worn or missing seals on metal sink and bath plugs with a diameter of 38mm (1 1/2 inches)/ 45mm (1 3/4 inches). These O rings have an outer diameter of 34mm/ 41mm and are stretched around the plug to form a tight seal. The thickness of the O ring is 2mm and suits the vast majority of plugs. Made of durable, corrosion resistant rubber. These O rings form a tight seal and will last. Easy to use. Simply fit over old plugs groove. Please note that the plug shown on the attached image is not included and is for usage illustration only. Material Rubber Colour Black Outer diameter 34mm/ 41mm thickness 2mm Type O-Ring Brand Unbranded/Generic MPN W2D94670843373 .