This is the BR1306 brushless motor from RacerStar. You can choose between 3100kv and 4000kv motors and the thread direction. It is compatible with 1-2S batteries and can produce 240g of thrust with a 5 inch prop.

Specifications:

• KV: 3100 or 4000
• Stator Diameter: 17.6mm
• Stator Length: 12.7mm
• Shaft Diameter: M5
• Motor Dimensions(Dia.*Len): 17.614.5mm
• Weight (g): about 11g
• No.of Cells(Lipo): 1-2S
• Max Continuous current(A): 6.6A
• Max Continuous Power(W): 49W
• Internal resistance:
• Usage: for 150-200 Glass Multirotor Frame Kit
• Choose between clockwise motor rotation (black cap) and counter-clockwise motor rotation (red cap)