contra rotation prop,white(C2CR)

contra rotation prop
About The Product

Contra-rotating prop Info
Falcon contra-rotating prop(C2CR) is made from carbon fiber material.The color is white.It includes two parts(front propeller and rear propeller).It’s special designed for F3A champion.With high efficiency and low noise.
Diameter     Picth
20.5″             20.5F
21″                 20F
21″                 20R , 22R
22″                 16.5F ,18F ,20F ,22F
23″                 18F ,20F           

20″                 22.5R      
22″                18R ,18.3R ,20R ,22R    
23″                 20R ,22R             

Our suggest combination:
1.21×20(Front)  21×20(Rear)

2.22×16.5(Front)       22×18.3(Rear)
3.22×18(Front)         22×20(Rear)
4.22×20(Front)         22×22(Rear)
5.20.5×20.5(Front)   20×22.5(Rear)
6.22×22(Front)         22×22(Rear)
7.22×18(Front)         22×18(Rear)
8.23×18(Front)         23×20(Rear)
9.23×20(Front)         23×22(Rear)
10.21×22(Rear),the pilots can match up the front props by your need.