This is the E-flite 7.5 Gram Sub-Micro S75 Servo. The S75 is housed in an attractive transparent grey case and features a universal connector compatible with all major brand receivers. The S75 offers superior speed, torque, and precision for its class, and includes complete mounting hardware and an assortment of servo arms, including an extra-long 3D arm. In addition to use in electric aircraft, the S75 is also perfect for applications including micro helicopters like the Blade CP and Blade CP Pro, and 1/18th scale onroad and offroad cars and trucks like the Losi Mini-T.Features Universal connector Includes complete mounting hardware Includes an extra-long 3D servo arm 17.2 oz/in (1.17 kg/cm) of torque @ 4.8V .12 sec/60 deg speed @ 4.8V Weighs just .26 oz (7.5 g) with servo arm and servo lead SpecificationsType: Sub-Micro, High-Speed and High-TorqueTorque: 17.2 oz/in (1.17 kg. cm) @ 4.8VSpeed: .12 sec/60 deg @ 4.8VDimensions (WxLxH): (L x W x H): .90x.45x.94" (23 x 12 x 24mm)Weight: .26 oz (7.5 g)Motor Type: CorelessConnector Type: UniversalApplication: Electric slow flyer to park flyer 3D airplanes, micro to mini electric helicopters and 1/18th scale onroad and offroad vehiclesVoltage: 4.8 - 5.3V DC