Soma Stem Riser. Features: The solution for riders with a 1" threaded fork wanting to sit up straight Replaces stock 1" quill stem with 10.5" tall threadless stem adapter Clamp on any 1-1/8" threadless stem, set the height and ride 22.2mm aluminum mast with aluminum expander, top cap, steel bolt Specifications: Fork Size: 1" (Threaded) Stem Size: 1-1/8" (Threadless) Quill Size: 22.2mm Color: Black