This is a replacement ball joint for your ZZP Ecotec Tubular Control Arms. Sold as a single unit, if you want to replace both you will want to order a quantity of 2. Will also work on FE5 LSJ control arms, however you have to drill and pound out your rivets. 

These are only for the LSJ 19.5mm ball joint. Will not fit LNF cars with the larger 20.5mm ball joint.