tap ceramic disc cartridge(https://www.yxfaucet.com/product/fast-open-spindle/fast-open-brass-spindle-tap-ceramic-disc-cartridge.html) 1.High quality raw material. 2.Sleek touch,flexibly adjusting of flow, stable seal performance. our cartridges can regularly serve 300,000 times under water-tight condition. 3.Varied design 4Rich OEM experience 5.Strict administration and inspection 6.Low price and best service.