These custom made aluminum extrusions are perfect for you Multi-Rotor DIY projects, no more borrowing moms shower curtain rods...they have internal riffling (ribbing) added to remain ultra-light but have increased strength and anti-vibration characteristics as well as anodized for various color options for orientation and Bling.
Diameter:12.8 x 12.8mm (.5inch)
The tubes I have receive were not anodized but painted (the internal of tube was natural alluminium).
I order 6 tubes and one was warped on the longitudinal axis.
The tube is very light but also very fragile, it is impossible to unbend the tube once it has a deformation.
I would suggest some tenth of millimiters more for the thickness of the tube .Great and light weight. When printing a frame on a 3D printer. Set the tube holes to 15mm.This aluminum square tube is very cheap and quality seem fine. You can easily use this to anything you need not only for multi-rotor build. Recommend!I use these for a H-Quad frame instead of 12mm wooden booms, they can take a crash and keep going where the wood would break. Also they're hollow so you can run your wires inside them to keep everything clean.bought these for a FT rotor-bones tricopter, the fit perfectly in the batbone frame, they come in clear shrink rap for protection, all arrived in good condition, not scuffs or scratches, their actual dimensions are closer too 13mm square, which is actually what i was after so good on hkstrong and light,good for multimotor.recommend