None., 8510 Side arm and channel., 8521 Weld-on extension., 8530 Closer arm with arm channel., 8531 Closer arm with angle bracket., 8534 Closer arm with arm channel., 8535 Closer arm with angle bracket., 8550/1 Floor pivot set., 8552/3 Floor pivot set., 8554/6 Threshold pivot set., 8555/7 Threshold pivot set.