We have a Delta kitchen faucet that has had a slow leak / drip for a week or so now and I decided to fix it using a kit. The faucet has actually been fairly good without any issues for about 5 years. The faucet is a very common one, with a single handle. The kit I found online for it was for the “#70 Ball” style which matched what I had. I believe there might also be some of the Peerless brand faucets that are about identical to this, so maybe the same procedure might apply with them as well.