Specialized Flow-Set Stem Transition & Spacer Set Description: This Specialized Flow-Set Stem Transition & Spacer Set includes stem spacer and headset transition pieces compatible with Specialized Flow-Set style stems. Features: Genuine Specialized replacement parts Flow-Set Stem spacer and transition headset cover set It is compatible with the following bikes: Specialized Ariel Specialized Como Specialized Crosstrail Specialized Roll Specialized Sirrus Specialized Sirrus Men Specialized Sirrus Wmn Specialized Vado Specialized Vado Men Specialized Vado Wmn Specialized Vita Includes: (1) 50mm Flow-Set Top Cover (1) 10mm Flow-Set Stem Spacer (2) 5mm Flow-Set Stem Spacer