Note: On this particular ball head, there is no anti-twisting mechanism (e.g. set screw or pin) to keep our retrofitted clamp from potentially loosening in the field. For more security, we recommend using epoxy or loctite to keep the clamp from twisting. Even with loctite, we do not recommend using this retrofitted clamp with the Sidekick because the particular geometry of the Sidekick puts significant stress on this connection.