Tarot 1555 High Efficient Folding Propeller w/Bracket (CW/CCW) TL100D04 Tarot 1555 high efficient folding propeller bracket adopts 6061T6 aluminum ally CNC processing; it is compatible with all kinds of motors which have 12mm x 12mm mounting holes. The propeller with metal folding bracket is easy to carry, and is of high efficient. For the 1555 folding propeller, it adopts new optimize propeller size design and high strength engineering material. So the Tarot 1555 propeller has better flexibility and stability, it could gain over 10% efficient improvement and stronger power reserve. It is compatible with quad-copter, hexa-copter, octa-copter and some other mutlicopters.