Features: 1. CNC machined metal shell is durable and wear-resistant. 2. Adopt long-life bearings with high precision, small friction and good durability. 3. Suitable for RC racing quadcopters. 4. Oxygen-free copper windings and N40UH magnetic steel, can bear 180℃. 5. Adopts silicon-steel iron core with low iron-loss performance. 6. Unique assembly process and well-balanced stators with high smoothness and accuracy. Specifications: Nut Color: Black, Silver (Each color for 2pcs) Material: Metal Model: RS2205 KV: 2300KV Outer Diameter of Stator: 22mm / 0.87inch Stator Thickness: 5mm / 0.2inch No-load Current: 0.4 Resistance: 85mΩ Max. Continuous Current: 19A/10S Max. Continuous Power: 280W No. of Cells: 3 - 4S Total Length: 33.3mm / 1.3inch (With Shaft) Recommended ESC: 30A Recommended Propeller: 5-6inch Weight: 144g Package Include: 2 x CCW Motor 2 x CW Motor 16 x Mounting Screws .