Token PF30P Press Fit Bottom Bracket - BB386/BB392 BB30/BB386 BlackToken PF30P Press Fit Bottom Bracket BB386 BB392 BB30 BB386 Black. Tokens Press fit bottom bracket uses the best materials such as a shell that is made from a combination of fibre and plastic. Precisely machined to allow an exact fit into the frame and eliminate squeaks. It also provides a stable platform for the bearings and gives them a longer lifespan. Premium Bearings are high carbon steel bearings made to a higher standard so they run smoother