Chris King Bottom Bracket Press Fit 30 pedals yet sturdy carbon monocoque rail Bell yet sturdy carbon monocoque rail resulting in a lightweight performance saddle with unrivalled comfort It's a 100% sustainable product that's made without the use of any glue 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