This bottom valve with overflow function has a simple and practical design and will be the best choice for your bathroom. Being made of zinc and brass, this bottom valve is durable and guarantees a long service life. The dimension of the screw coupling is 1 inches. When the sink is full, water can drain out through the overflow to ensure that the bathroom does not flood. In addition, it has a simple pop-up function, it is easy to use and clean. Colour: GoldMaterial: Zinc, brassDimensions: 6.4 x 6.4 x 9.1 cm (L x W x H)< /li>Dimensions screw connection: 1"1/4" (0.635 cm) pop-up with 8 cm back pieceEasy to use and clean< li>Assembly required: Yes SKU:149057Colour: GoldMaterials: Zinc, brassDimensions: 6.4 x 6.4 x 9.1 cm (L x W x H)Dimensions screw connection: 1"1/4" (0.635 cm) pop-up with 8 cm back piece Easy to use and cleanAssembly required: Yes Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.