Vixen Advanced Polaris modules have been designed to allow the user to develop the AP mounting system. By adding additional AP modules, you can assemble your AP mount according to your wishes. This kit consists of an AP declination unit and an AP counterweight bar. Batteries not included. Features: - Extends AP photoguider for complete mounting. - Counterweight bar included. What you get: - Declination body with counterweight bar. - Assembly tool.