ShareGoo Metal Tail Motor for WLtoys V911-20 RC Helicopter (Pack of 2) Made of high quality metal material, it is practical and high-quality for long-term use Low energy consumption, compact, convenient and easy to replace Line Length: 7.87" / 20cm Dimensions: (0.71 x 0.24)" / (1.8 x 0.6)cm (L x Dia.) Package Includes: 2 x V911-20 Tail Motor White