Quantity and specifications: 2-in-1 bathtub stopper and filter, washable, prevents hair and valuables from leaking into the bathtub and avoids unnecessary clogging. High Quality Material: Made of high quality stainless steel + seamless one-piece casting brass, rust and corrosion resistant, durable and can be reused for a long time. EASY INSTALLATION: Anyone can install the pop-up drain due to its simple construction, no tools required, and the thickened extension nut allows for freehand installation. Powerful: The basket can block dust, prevent hair clogging, effectively block and protect valuables from loss. Comfortable pressure switch that does not block the drain. Dimensions: Including two resilient cores, closed height 50mm, lid width 35mm, filter basket diameter 31.5mm. (Please measure the diameter of the sink before purchasing!!!)