This is a pair of EPP 10×4.5″ propellers (EPP1045). These propellers are perfect for a quadcopter or other multi-motor aircraft. These propellers come with a 7 different sizes shaft adapters to accommodate a variety motor shafts. The diameter of shaft adapters are: 3mm, 3.2mm, 4mm, 5mm, 6mm, 6.35mm, 7.95mm. Order two of these pairs for your quadcopter.
The pair includes one pusher and one tractor propeller.
Note: Pusher propellers rotate clockwise and Tractor propellers rotate counterclockwise.