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Dobsonian Counterweight set for all Explore Scientific Truss Dobsonians
These fit all 3 of Explore Scientific's DOBs (DOB1045-00, DOB1245-00 and DOB1645-00). Each set includes a 14mm counter weight shaft and 2 - 2.5 lbs counter weights. The shaft attaches to the pre-threaded hole on the fan side of the primary mirror box.