Overall Rigid Structure: Better. Smoother high-precision all-metal jacket, stable operationGood Metal Materials: Delicate appearance, excellent insulation, heat resistance, metal materials.Precise CNC machining makes it accurate in size and easy to install.Fine workmanship,high brightness,not easy to fade.Made of high-quality metal materials,strong,durable and not easily decompatible withmed.Applicable models: Weili 12428 12429 12423 Flying over 01 02 0Colour:blueMaterial:MetalSize:21 x 7mmWeight: 14gPackage Contents:1 pair x main beam fixing parts2 x screwsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.