Chris King Bottom Bracket Press Fit 30 Color:Glossy Black trail road debris Ultegra trail road debris The spider design uses a proprietary thread on chainring mount system which allows us to reduce weight and increase stiffness without compromising the ability to swap rings Each Press Fit 30 bottom bracket includes our exclusive fully serviceable made in house bearings that integrate with our easy to use grease injection system to create a bottom bracket with unparalleled performance and durability Our Press Fit 30 bottom bracket is machined to aerospace level tolerances to ensure that your bike has the precision fit that you have come to expect from Chris King’s legendary components