360x180 panorama/spheric head for Canon 10-22mm lens (Canon EOS)

This is a revision of the panoramic head I used for the last two years.
It is lightweight, it does withstand rough conditions, outdoors and indoors (caves!), and usually attached to my rucksack. I only use a Canon 10-22 mm EFS lens to make panoramas, so I feel better with this cheap head than with a heavy, voluminous and expensive "pro" head such as the Ninja Nodal.
You will get some results here (dynamic panoramic samples): https://www.360cities.net/profile/mooncactus