The Vixen Half Pillar (White) is a 9" (23 cm) extension tube for the GP series of telescope mounts that provides increased observing comfort for observations near zenith when using long focal length telescopes.
When pointing your scope nearer to the equator, the half pillar prevents the weight shaft from colliding with the tripod. An invaluable accessory.
In the Box
Vixen Optics 9" Half Pillar for GP Series Telescope Mounts