Wondering can anyone help me here.
I heard a rattle from my rear wheel today when I got home lifting the bike from car to house. Thought i had broken a spoke but no. Anyhow took the back wheel off and removed both the tire and tube still there was a rattle. Out from the value hole came out a screw/bolt.
I've attached a picture of it as 1. I don't think it's meant to be there 2. What part of the bike is it from?