Shimano

Nexus CJ-8S20 Cassette Joint Unit

Not sure if the prior cassette arm had the allignment window originally or not. It has been a while since I bought the bike, but there hasn't been a window for adjusting the shifter cable for many years. When I ordered this part, it came with the window and takes a lot of the guess work out of adjusting the shifter. As I stated earlier, the part came ahead of schedule, was the cheapest on the intrawebs by quite a bit and was just what I needed.