Functionality: 1255 replacement fixes leaks in specific for one handle moedels, saving you the cost of a full replacement. Compatibility: Designed for compatible for single-handle units, please check your model before buying. Quality Materials:Built with materials, long lasting resists rust and wear, keeps your unit sealed and working smoothly. Easy Installation: Simply turn off the water supply, remove the model head, use a wrench to unscrew the old valve stem assembly and replace it with our anti-leak valve stem. Color: Black Material: plastic Package Contents: 1 x Valve core 1 x Wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.