front-for-arm bush ball bearing.
Eccentric bushing, so adjustable in caster (front→rear), or antidive (height)
provides excellent driver feedback, precise control and firm suspension. Inner bushing is accurately made of both high molecule plastic tube and specific metal alloy. High durability and reliability. Outer bushing is combined with TPV material anti-dust boot, 100% resistant to dust, water and oil, extend the life of the bushing