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:D25mm Multi-rotor Arm Clamps/Tube Clamps
Screw diameter: Φ2.5mm (12.9 class high strength)
Screw length: 37mm
Screw hole spacing: 29.5mm ±0.2
Net weight: 9.6g (including screws and nuts)
1 x tube clamp (including screws)