CAMTREE 3FT CAMERA MICRO DOLLY VEDIO SLIDER CAMTREESHOP

you cam buy from folllowing link :

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3ft long Micro Dolly featured of Igus rails slide adapters with our unique ball bearing wheel design and the carried inertia provided by our crank and belt drive system gives a more fluid feel than other conventional sliders systems

http://vkontakte.ru/canon_5d_mark_iii