CE series Convertible Clear Edge mounts allow the user to easily convert the style of the mount from right-handed to left-handed. This feature is both a time saver as well as a cost saver since each CE mount is really two mounts in one. Even with this convenient feature, all of these mounts still have outstanding stability and usability owing to a stiff frame, matched-thread adjusters and sapphire seats. The 9819 , based on the 1 inch Classic mount, has three precision adjusters and an extra thick frame. The 9779 is the two adjuster version. For 1/2-inch (12.7-mm) mirrors, the 9769-K is available with its exceptionally compact size and three precision adjusters.