mk5 rs2000 bolt for brake has an hex end and there are two of them but just need one as the bolt started rolling away on me and went down a drain lol, and the brakes have been put on my car so need quick so i can use my car again

it is not the one that holds the onto the hub it is the one that holds the calipers together

have tryed using the one on of my standard orion but the bolt is much wider and larger than the rs2000 one if anybody has one of these spare please send price so that i can get it as quick as possible