OHD Kit for Scott Spark Carbon 2022The CeramicSpeed SLT (Solid Lubrication Technology) Bearing for Headsets: OHD (Optimized Headset Design), features a unique combination of an oil-encapsulated solid plastic polymer and stainless-steel materials which results in a self-lubricating, corrosion-resistant, and maintenance-free bearing.The micropores in the otherwise solid polymer evenly distribute just enough oil to keep the bearing well-lubricated, while also containing sufficient oil for it to be self-lubricating over the lifespan of the bearing even when ridden in the harshest of conditions. The CeramicSpeed SLT OHD Bearing is designed, developed, and hand-built in Denmark and comes with a lifetime warranty. For further product information: SLTRELATED TECHNICAL INFORMATION:Upper: 40x52x7 mm 45/45° Lower: 42x52x7 mm 45/45°