APC launches patented quick-release multi-rotor hubs
APC launched a patented hub system for tool-free removal of folding multi-rotor propeller blades.

Evidence notes
- The hub attached to a motor bell with two M3 screws spaced 12 millimetres apart and used a 4-millimetre centre hole for alignment or shaft attachment.
- Operators could remove or fold the blades without tools to reduce the space needed for packaging and transport.
- A non-quick-release hub variant supported systems that use active rotor braking.