This is a replacement Schumacher FAB Front Adjustable Brake Set. The "FAB" front adjustable brake system allows you to adjust the amount of braking to the front wheels via the pressure pads, and is controlled by tightening the external side nut.
When fully tight the car operates with full time four wheel braking (as per standard kit specifications), when fully backed off acts like a one way layshaft. This adjustment allows proportional control of front braking, allowing you to tune the cars breaking characteristics to suit any track and driving style. Additionally, the CAT K1 vented slipper clutch is also included.