Quantity and specifications: including 4 x Bounce Drain Filter.2 in 1 bathtub stopper and filter, washable, can prevent hair and valuables from flowing into the bathtub and avoid unnecessary blockage. High-quality material: made of high-quality stainless steel + brass, integrally cast and seamless, rust and corrosion resistant, durable and can be reused for a long time. Easy to install: Anyone can install a pop-up drain because of its simple construction, no tools required, the thickened and lengthened nut allows it to be mounted with bare hands. Powerful functions: the basket can block dust, prevent hair from blocking, and can effectively block and protect valuables from loss. Comfortable pressure switch, without obstructing drainage. Size: It includes two bounce cores, the closed height is 50mm, the width of the cover is 35mm and the diameter of the filter basket is 31.5mm. (Please measure the diameter of the sink before purchasing!!!) Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.