This is a pan bar included with the Manfrotto 502 and Nitrotech series. It is 35.5cm long and does not extend. I purchased this because the screw on the pan bar I was using broke, but I didn't replace the entire pan bar, only the short screw from the previous model. Therefore, the item for sale is new. Two screws, short and long, were included, but as mentioned above, I used the short one. So, the only included accessory is the long screw (the screw for the current head?). *It seems the screw lengths may differ between the current and previous models. To avoid any issues, returns and refunds are not accepted. Thank you.