PARAMETER - adjustment positions:3; horn hole diameter:1.6mm; length of horn from base: 16mm; parts overall size: 13 x 9 mm (L*W); horn overall size: 16 x 17 x 9 mm (L*W*H).
FEATURE - It's small and easy to install in your RC airplane..
APPLICATION - suitable for RC aircraft, park jets and other RC airplanes scale models.Ideal for indoor and small electric park flyers.