Features:DIYers can assemble your own multi-rotor aircrafts with this arm clamps, it suit for not only small size entertainment purpose multi-rotor, but also large scale commercial aerial photography multi-rotor aircrafts.
Available from 12 to 25 in diameters.
Specifications:D15mm Multi-rotor Arm Clamps/Tube Clamps
Suit for tube diameter: 15mm
Screw diameter: Φ2.5mm (12.9 class high strength)
1 x tube clamp (including screws)