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Origin-8's Quill Adapter allows you to use modern threadless stems on bicycles with threaded forks that take quill stems (stems with bolts in the center). The Quill Adapter is made of light and durable 7075 aluminum and features a chromoly bolt.

Forged AL6061-T6 alloy construction with CNC groove design - Machined insert for even clamping force - For use with carbon seat posts - Ultra-lightweight

- Anti chain-suck device - Allows the front derailleur to be adjusted for strong downshifts - If not using front derailleur the device can act as a chain guide