Additional set of 4 spacer bars, to mount different lenses to your SnapShot. All Standard/Technical SnapShots come with one set as standard.
Available in any length, from 15-165mm. To calculate the correct length required, subtract either 46mm (SnapShot Standard), or 51mm (StanShot Technical) from the flange depth ("FFD") of the lens you wish to mount. There is a table on the following page;