of the products:1. Our sink stopper is made of solid copper. The industry-leading workmanship ensures that our sink stoppers can withstand the acids and corrosion of daily use.2. Simply insert the drain strainer into the bathtub and you can adjust the height of the drain stopper by hand using the metal screw.3. Excellent quality, firmly holds the bathtub and prevents water leakage, durable, reusable and environmentally friendly.SpecificationColor: mainly silver, as shown.Material: brass, chrome, rubberRubber diameter: 43 mm - suitable for most bathtubs.Connector diameter: 41 mm.Product height: 45-55 mm. Adjustable.Cover diameter: 43 mm.Lift rod diameter: 9 mmScope of delivery:2 x chrome-plated bathtub drain stoppers.