"Propeller blades" refers to the rotating parts of a propeller that help move an aircraft or ship forward by producing a force that pushes air or water towards the back. Full definition
Many units also come with a tool similar to an Allen wrench, which can free up jammed propeller blades from underneath the unit. (rismedia.com)
It's possible, says Ellington, that a microhelicopter, with propeller blades that imitate insect wings — short, wide blades with a high angle of attack — will turn out to be an easier solution. (discovermagazine.com)
The drone also comes with lots of accessories, including a 2.4 Ghz transmitter, a USB charging cable, six propeller blade guards for extra protection, and six spare blades. (geekwrapped.com)