STP A38Ⅱ 1408 3800KV 3-4S Brushless Motor for RC FPV Racing Drone Specification: Item name:STP A38Ⅱ 1408 brushless motor KV: 3800KVWeight: 16g Operating voltage:3-4 S Recommended props: 3052, 4045 Test data, please click here. Package included:1x STP A38Ⅱ 1408 3800KV motor