Complete set 4 tap cartridges (2 x blue and 2 x red), suitable for cold and hot water, with 4 screws (4 mm). Please note the image size before purchasing. Explanation red = closing on the left (anti-clockwise), blue = clockwise. M4 solid brass screws included. High quality made of brass and ceramic, sturdy and durable. Works perfectly, no more dripping taps, can be used for a long time. Widely used Universal size, suitable for 75% of the tap. Can be used for single or double taps. Ideal for bathrooms, kitchens. LongLife Protection against calcification thanks to high quality ceramic sealing discs. Description: Properties: Suitable for hot and cold water. Fits most double handle 1/2 " thread kitchen and bathroom faucets. With ceramic washers, Product Name: Faucet Cartridge Material: ceramic and brass. Color: gold, blue, red. Weight: 200 g. Size: Please see the picture for detailed dimensions delivery: 2 x 1/2 " right side brass ceramic disc valve 2 x 1/2 " brass ceramic valve top part 4 x screws Product Manual: Red O-ring down: 90 degrees Turn counterclockwise to open the faucet and turn clockwise to close the faucet. Usually used on the left. Blue O-ring at the bottom: 90 degrees Turn it clockwise to open the faucet and counterclockwise to close the faucet. Usually used on the right.