Numerous Specialized bicycles have employed this this headset bearing since 2011. It is most commonly used as the Upper bearing in what is referred to as the Campy-style drop-in system for integrated headtubes. Some other Specialized bikes may reference this Specialized part number (S092500002) as a lower bearing as well.

The bearing itself is designed for 1⅛" steerer tubes or steerer tubes that taper to 1⅛". The Outer diameter is 41.8mm, the inner diameter is 30.5mm, and the height is 8mm. The bearing has 45° x 45° degree races.