US Ship Hobbymate HB790 MEMS Rc Helicopter 3D Gyro dual Rates Metal Cover Case Hobbymate provides the HB790 gyro for beginners; intermediate level and high level pilot a solid rock tail lock performance on their rc helicopters The gyro is a high specification model helicopter gyro capable of delivering exceptionally consistent yaw rates even at eye-blurring speeds of over two full turns per second. The control is smooth and precise with a very solid feel and impressive holding power The stopping characteristics give a nice soft, but precise response with no bounce back.The built in configuration routine allows adjustment of individual left and right endpoints, direction reversing and servo type selection Market leading tail hold and pirouette consistency Compatible with all digital tail servos (760us, 960us and 1520us); Offers 250Hz, 333Hz and ultra-high 560Hz servo frame rates