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: MetalModel: RS2205KV: 2300KVOuter Diameter of Stator: 22mm or 0.87inch Stator Thickness: 5mm or 0.2inchNo-load Current: 0.4Resistance: 85mMax. Continuous Current: 19A or 10SMax. Continuous Power: 280WNo. of Cells: 3 - 4S Total Length: 33.3mm or 1.3inch (With Shaft)Recommended ESC: 30ARecommended Propeller: 5-6inchWeight: 144gPackage Include: 2 x CCW Motor 2 x CW Motor 16 x Mounting Screws.