A1 Steel Basket Large Bore Copper Core Drainer Bouncing Core Washbasin 33-55mm Hole Distance Universal Plug Core 1. Anti-insect, anti-odor, anti-clogging, preventing odor spillage, blocking foreign objects, fast drainage 2. 304 stainless steel, rust and corrosion resistance, thickening more durable 3. Dense filter mesh, filtration without missing, effectively isolate small flying insects, filtering hair 4. Fast and efficient drainage, smooth drainage, goodbye to water overflow 5. Closed pop-up core, more flexible and durable 6. Thickened copper core, strong and more durable, not easy to rust, not broken 7. Separable anti-clogging basket design, easy to clean 8. Installation hole diameter: 33-55mm 9. Material: 304 stainless steel, copper 10. Size: short version about 5.5 x 5 x 3.3cm, long version about 5.5 x 8 x 3.3cm 11. Weight: short version about 45g, long version about 51g