A) Replacement Bearings for Evil's specific FSA Integrated Tapered No.57/68 headset. This bearing kit only includes the following: Upper 44mm Bearing Lower 62mm Bearing Compatibility: Models Following, Following MB, Offering, Calling, Insurgent, Wreckoning B) Works Components replacement bearings to suit all our tapered steerer tube headsets. Upper Bearing: 41mm OD, 45 x 45 Degree AC Sealed Bearings Lower Bearing: 52mm OD, 45 x 45 Degree AC Sealed Bearings Sold in Pairs Please see image for bearing dimensions. Also suitable for Works Components Angle Headset. C) Works Components Tapered Steerer Tube Crown Race A works components tapered steerer tube crown race. For Fitment of Tapered forks to a Tapered Headset. Compatibility: Models Following, Following MB, Offering, Calling, Insurgent, Wreckoning D) Works Compression Ring and Spacer Made with 7075 Aluminium This part will work with all our angle and reach adjust headsets Included: Compression Ring and Spacer E) Works Crown Race Reducer 36° (1.5" to 1-1/8") Crown Race for Evil Lower Headset Assembly for conversion of 1.5" to 1-1/8". Will only accommodate forks with 1-1/8" steerer tubes.