1. X2807 1300KV brushless motor is the upgraded motor, 12N14P high torque motor design, which is smooth, reliable and powerful. 2. The motor is characterized by support 2~6S lipo. Suitable for multicopter, RC aircraft, drone. 3. Motor Bearing Shaft size 4mm, which is compatible with 6-7inch propeller. 4. FPV brushless motor provides the most power and thrust in the lightest weight. Give you a more satisfied experience with your model. 5. Each rotor was dynamically balanced with high speed. High purity copper windings maximize efficiency, good insulation and heat resistance. Test item: X2807(1300KV) No.of cells: 2S-6S Weight:48.6g W/0 Silicone Wire Bearing Shaft:4mm Max.Power (6S):1400W Lead:18#AWG200mm Motor Dimensions:33.5mm x 17.5mm Idle Current (10V):1A Propeller:6inch-7inch Framework:12N 14P Current (6S):55A Internal Resistance:60mΩ Colour:Black Material:Metal Package Contents: 4 x X2807 Brushless Motor with Screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.