Hey gggGary, Thanks for the reply. I know nothing about bikes but I'm learning. Just going on logic and ignorance, the end piece looks like a stop. (not adjustable) how do you adjust the chain? ........... 20 minutes later ....... I figured it out. I can see what they're for. Just use regular chain adjusters ... right? Where is this shed you mentioned.... do you have these ? Yeah ..... $13 sound good to me. Fill me in on how and where to get them. Thanks again ......