What is for?
High quality products. Get better performance for your Motor. 
Material = Metal/Cooper/Plastic/Others
 
*Select Gear Box Model
-12.5K
-25K
-30K
-500K
 
Specs:
A = 90 mm
B = 90 mm
C = 34 mm
D = 12 mm
E = 2 mm
F = 2 mm
G = 4 mm
H = M6 – 1.0 (x4)
I = 73 mm
J = 60 mm
K = 93 mm