Mechanical Zero Tool (Pro-Version) Ideal for Tron Helicopters ILGoblin 520 Parts The Scorpion tool bag is

The Scorpion tool bag is made by durable 600 Denier Polyester to keep the tools secure

Front Servo Support - Goblin Fireball

This high end micro servo offers incredible torque combined with high speed

Steel Main Shaft - Raw Nitro

Mechanical Zero Tool (Pro-Version) Ideal for Tron Helicopters ILGoblin 520 Parts The Scorpion tool bag isThe Mechanical Zero Tool Pro Version is a device that allows you to set the mechanical Zero of a blade grip for setting the RC Helicopter with a true mechanical zero. It has an edge that rests on the main blade grip and another edge that rests on the yoke indicating any difference in their angles by an angled gap in between the zero finder and the yoke. Setup your FBL to zero pitch setup and then adjust the pitch turnbuckle until the Zero Tool