Double protection: The airspeed sensor is equipped with a protective shell to protect internal components from damage. Quality performance: Our digital kit made of high-quality material, which durable and has long service life. Effortless install: easy install disassemble. just put into pc, plug it in start using it. Set: A-1 x Cable Tube Kit Application: For simultaneously calibrate throttle range ESCs on multi-rotor. Use: Vehicles & Remote Control Toys Material: plastic+metal colour: As Shown Package Contents: 1 Kit(Some accessories are random color, Cannot be chosen specific color.) Only above content, other products not included. Note: Light reflection different displays may cause color item picture little real thing. measurement allowed error +/- 1-3cm.