I bought this because the whole range was cheaper than buying the 8 pins which I needed individually. So far they are working great and I have plenty of spares for the future. I bought this "used" and was glad I did, it was less than half the price new and the only downside was the pins were all mixed up. together, and apparently the person who brought it back took some of it with them. They also kept one of the ones they replaced, so that's cool. It took me about 20 minutes to organize them while watching TV, it wasn't necessary but I find it fun to organize such things.