CNC Aluminum 16mm Folding Multi-Rotor Boom Holder with Bearings (Black)
The perfect solution for your DIY project, supplied complete with fixing hardware and twin ballraces.
Overall Length: 36mm
Overall Width: 23mm
Hole Centers: 25mm
Boom Diameter: 16mm
Absolute rubbish as it turns out. No recessed hole at either end for recessed bolt head or nuts and also no thread on either hole, so you HAVE to use a nut. So without recesses it actually doesn't fit between frame plates when the arm is bolted through. Build quality with bearing and metal is great though, so could be an awesome piece.....but t's not.