SOLID BRASS: Our tiles on the drain adopt premium brass material and strong construction to ensure long life. Rust resistant, corrosion protection. brass fitting will not crack or leak. DIMENSIONS: 4 in. Length, 4 in. Width (10cm x 10cm), 1.5 in. bottom outlet (φ39mm). Please note that this floor drain does not work with Shower Drain Base or Rubber Seal. If you are not sure whether it works or not, please consult your plumber. ANTI-ODOR & ANTI-CLOGGING: Gravity spring design copper inner core features auto on and off function to prevent unpleasant odor; Removable grid and hair strainer/trap to help collect hair and other debris, prevents clogging and is easy to clean. DUAL-USE COVER: One Black Coated Smooth Side and One Tiled Side (tile thickness ≤ 10mm). This shower drain is designed to complement the look of or existing decor. It can be used for multiple purposes in kitchen, bathroom, garage, basement and toilet etc. MATTE BLACK COATING: Beautiful black coated surface, not easily scratched. Matching with your black dark/bronze faucets, shower heads and other bathroom fixture accessories, surprisingly trendy matte black coating and square linear shape look great with your tiles.