I was really convinced this table Dolly. Price / performance is truly unbeatable, runs super quiet and is quick to set up. In the description of the middle thread is "specified thread (for BSW Tripod heads), but the thread is 1/4" as a 3/8 size (standard thread of cameras). My tripod head, I can not fix without extra adapter on the dolly so. This should be changed in the product description. But on the whole super system and recommended!