The Delta Single-Handle Valve Cartridge Diamond seal technology. This cartridge is for single-handle kitchen and john faucets -LRB- not included -RRB-. As part of a company that delivers water every day through millions of faucets global, Delta -LRB- R -RRB- a lifetime restricted warranty on all parts to the freehand consumer. Delta is to providing you the best experience with water. Another that Delta is more than just a faucet.