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The VO 1" Threadless Stem Adaptor allows you to use threadless stems on bikes designed for quill stems. Now you have the benefit of being able to use modern stems and handlebars to dial in your fit and comfort. Standard VO Threadless Stems pair perfectly with this adaptor. Not compatible with our VO Tall-Stack, Happy, and Cigne Stems. Compatibility: Works with standard 1" (22.2mm) threaded forks and 1 1/8" threadless stems Length: 180 mm total length Adjustability: 55mm above the minimum insertion line Stack Height: 40mm Weight: 272g Steel bolt and wedge High polish silver finish