Trex 600 nitro Carbon Fiber 18G Servo Adapter Plate HN6070
For Throttle servo size 30.5X12.5mm like Hitec HS81,82
Trex 600 nitro Fiberglass 18G Servo Adapter Plate HN6071
For Throttle servo size 30.5X12.5mm like Hitec HS81,82..