This video shows how to use the EXAtrac RF20H (Extract 810/820) pneumatic retractable holder with the EXAtrac RF20M (Exmatic 450) manual control unit. The EXAtrac RF20H is simply a pneumatic version of the 810M/820M manual retractable holder. While we strive to provide the most safe and accurate information possible, we are not responsible for any loss or damages resulting from attempting to replicate the acts conducted in this video. Furthermore, we shall not be held liable for use or misuse of information contained in this video.