We now have detailed LCN Door Closers Part Lists available online! Each parts break down has the complete arm break downs with the part number you need to order. We have them online for the 1460/1461, 4040/4041XP, 4010/4011, and 4110/4111 door closers. If you have a different model, just email us and we will get one off to you. These part break downs a big help in narrowing down what you really need, so you can get the correct part the first time. These are factory break downs, and most of these parts we have in stock for immediate delivery. If we do not have, we can order them , and they usually ship in 5 days or less. These part breakdowns can be found on our commercial door website.