The Campagnolo Pro-Tech bottom brackets are designed to handle the toughest of conditions and keep you turning over with efficiency. They utilize an external sealing ring design that protects against water, mud and grit. Note: Bearings come pressed onto the crank and therefore are not included with the BB. Features: New patented extrenal ring seal paired with an internal sleeve seal protects bearings from water and contaminants Provides extremely efficient and smooth function as well as long lasting reliability Available in multiple threaded and pressfit options Specifications: Frame Interface: PF30 Spindle Interface: Campagnolo Ultra-Torque Bottom Bracket Shell ID: 46mm Shell Width: 68mm Bearings: - Color: Black Weight: 83g