Fixed to the dowel is a back-plate for each mighty power-house that is T-motor's U7. This in turn is glued to the motor with epoxy resin (araldite to the stupid among you) alone, in the hope that the test-run provides more entertaining footage on YouTube.
The part is actually an end-bracket for a clothes-rail and should you be sending your son to the store to collect, then be sure to get him to ask for an aerospace-grade rail bracket along with a long weight and a sky-hook.
