Loosenng the dial on the stand allows the bracket to be spun round so that the sled can be placed on the balancing spud, as well as a hook that allows the arm to be hung-up when not in use.
The three holes in the bracket take the three main Steadicam allen keys, (socket-block, arm, post). GPI charge $300.00 plus shipping for a new one of these when I last looked. Included is the docking-ring adaptor that attaches around any 1.5 inch post (allen adjustment).£200.00 plus postage. Any questions, please email: email@example.com.