Durable metal chain lock with key for enhanced security. - Brand: KITACO - Type: Chain Lock - Lock Material: Metal - Accessories: Keys (3) KITACO Motorcycle Lock Chain Arm Lock HDX-1625 This is a discontinued security chain from KITACO. With a total length of 2250mm, it's long enough to secure your motorcycle with plenty of room. For outdoor use, there is some rust on visible parts and some rivets are detached from the cover, but only a small portion of the chain itself is exposed. There are no problems with its use for security purposes. If you are looking for an arm lock, please consider this. Note: This is not an Ultra Arm Lock. It is an Arm Lock. I also own an Ultra Robot Arm (TDZ-8?), but I don't know what the difference is besides the key. I think this is also exceptionally sturdy compared to other chains. Please note that cancellations and returns are not accepted after purchase. Thank you for viewing.