these also fit on those motors requreid cut style props
Durable plastic construction provides both lightness and rigidity.
The Orange HD Propellers 1147(11X4.7)  Nylon fiber  Black comes
Very strong and lightweight.
Includes a set of reducers (3, 4, 5, 6 mm)
Quick to release, quick to attach
New design propellers, with greater aerodynamic efficiency, good lifting capacity
Size: 11 x 4.7'' Diameter of Shaft: 6.0mm
Thickness of center: 9.7mm
Weight: 20 gram/pair
 
Including one pair 1147x1 1147Rx1 and prop shaft washers 3MM\4MM\4.9MM\6MM.