Generally
A used manifold bolt that has a hexagonal head that the rust has taken material from. The bolt is blasted and can be used well if you use a 14mm socket, it does not work with a 9/16″ socket because it has too much play. But with a 14mm sleeve and being able to live with a bolt head that isn't smooth and nice, this is a cheaper option that works just as well as a normal bolt. The length of the bolt is approx: 57mm measured under the skull. Normally there are 12 bolts per car. If you have problems with the bolt or you don't like it, it's the money back without problems that applies.
