Gemfan  1209-4  
Inch: 31mm    Pitch: 0.9 in     
Weight: 0.21g    
Colors:Clear Blue1 mm, Clear 1 mm, Midnight Gray 1mm, 
Recommended Motor: 0802 25000kv
Quad weight :  30g
Package Includes:  4CW + 4CCW
Materials:PC
Characteristic:
For high kv motors
Higher thrust, more durable and with longer flight time
Full power and suitable for indoor tracks.
Higher thrust, more durable and with longer flight time
Full power and suit for indoor tracks.