Moose makes a kit that has the bolt included with the roller. I had to get one of these after I cut my stock mount off. The only bad thing is the roller barely catches the chain since I had to put a nut on the inside of the bolt (as well as the outside) to hold it in. If you need the bolt that goes inside the stock mount, I'd rob the one off the top roller and go to your hardware store. Moose also sells the rollers individually.