This packet of O-rings was suggested to complete the project- I had purchased an A/C hose, and at check out this packet of O-rings was suggested. This packet did not have the size that I needed to go with the hose. I had to go to a local auto parts store. The packet from the local store had a better assortment of O-rings and about 1/2 the cost. It can be noted that there is no description of the size of the O-rings, just that this product fits the vehicle that I was repairing. Some of the O-rings in this packet would fit on some of the connections, but the one that I needed was not included.