General description Sink stopper set includes 2 pieces designed for sinks with a drain opening of 34-40 mm. This waste set features an anti-blocking pop-up valve and an anti-clogging strainer, making it ideal for effective drainage and preventing clogs. Technical specifications Materials: Stainless Steel (Main Body), Brass (Bounce Core), ABS Plastic (Basket) Compatible drain hole diameter: 34-40 mm Contents: 2 washbasins with seals for 34 to 36 mm and 2 seal rings for 37 to 40 mm Installation Remove the old sink stopper. Insert the stainless steel rebound core. Install the pop-up sink drain, which serves as a tub/sink stopper. Usage Collects hair, jewelry, dirt, and other debris to prevent clogs. Other information Tip: Not all sinks are compatible with a 34-40 mm drain hole. Please measure the drain hole diameter before purchase to ensure compatibility.