For bikes featuring integrated headsets (such as the Ritchey Road Logic and Swiss Cross), the WCS Drop In Integrated Headset stands above all others. This alloy headset lower features stainless steel angular contact sealed cartridge bearings with a titanium coating for corrosion resistance, and they're packed with Ritchey high-webbing grease. Material: Alloy Lower Fit (S. H. I. S. ): IS42/30, IS47/33 Lower Bearing OD: 46/42, 52/47 Bearing: Sealed cartridge, Ti-coated Weight: 28-35g