Electronic speed controller is a basic accessory which plays a significant role in driving and controlling motor to complete all kinds of instructions. Please attach importance to this TITAN 40A Brushless ESC for RC Helicopter!This offer is at rather competitive price. It is featured with compact appearance? light structure and stable performance. Receiving signals from RC receiver and thus control the overall speed of your RC device? it will promote the stability generally. A good item welcomed by many RC toys fever fans! How can you miss it out?                                    Features            With stable performance? it is practical and durableOffer you high compatibility? reliability and stabilityEasy to install and convenient to useSuper high refresh rate? no buffering of the input signalPlay a significant role in driving and controlling motor to complete all kinds of instructionsIt is suitable for RC helicopters                                                             Specifications             Material     PC    <br> Weight     1.73oz / 49g    <br> Color     Black    <br> Dimensions     (3.15 x 1.18 x 0.39)" / (8 x 3 x 1)cm (L x W x H)    <br> Suitable for     RC Helicopter      <br>                                                             Package Includes            1 x Motor Speed Controller<br>