This is a Mugen 2.2mm Front anti-roll bar, and is intended for use with the Mugen MBX6 and MBX6T 1/8 scale vehicles.

Effects of Front Roll Bar Adjustment

Stiffness	Characteristic
Softer	Increased Front Chassis Roll Increased Front Traction Decreased Rear Traction Increases Off Power Steering (May Cause Oversteer)
Stiffer	Decreased Front Chassis Roll Decreased Front Traction Decreased Off Power Steering at Corner Entry (Increases Understeer) Quicker Steering Response