Motor Grip Pliers
Designed to grip the can of your electric motor, the silicon inserts help prevent scratching and allow you to get a better grip of your prop nut/spinner making removal of your propeller far easier.
Don't let their intended purpose limit you though, these pliers can be used on any round object that needs gripping such as print heads on 3D printers, carbon fibre or aluminium tubes or even hold the handle of a driver to get more leverage. It is definitely a tool you will use on a regular basis.
Metal Pliers for extra strength and durability - don't buy the cheap plastic ones - they break !