This is a good basic washer repair kit for old school type valves and plumbing fixtures. However, does not have a very large variety of different types of washers. A better choice would be the Danco 80817 for $6.19 that has a better assortment, including o rings and slip joint washers for drains. Of course none of these kits have every washer one would ever need for every plumbing job but it is nice to have an inexpensive kit with a lot of various types and sizes of washers that are available on a moments notice. Modern faucets use cartridges, so if one of those leaks just call the manufacturer - they usually will ship one out under warranty.
I want to thank Luis and Charlie's Rooter Service for Outstanding customer service. Luis came out for a clogged shower and later to find out that the cause was my main sewer line. He was honest on the cost and what needed to be done, Luis gave me options to make my decision easy. He was polite and professional, if you need quality work I would recommend Luis and Charlie's! Thank you Luis