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Origin-8's Pro Force QR Seat Clamp is forged and machined from light and durable aluminum and has an extra-leverage design to hold fast. This fine clamp boasts an anodized finish and a long quick-release lever for excellent clamping force. It also gives you more to hold onto so it's easier to raise/lower your seat.

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.

• Converts a cassette hub to a single speed • 8 spacers included in various sizes to adjust chain line • Anodized 6061 aluminum • Fits Shimano/SRAM cassette bodies • Conical spacers for increased cog stiffness • Includes single-speed guide, spacers, as well as 18T & 16T cogs

• Machined aluminum mounting arm • Delrin (engineering grade thermoplastic) chain guide body • Adjustable design • Fits 32T to 38T chainrings • Compatible with 1x drivetrain systems • Clamp mount: 31.8-34.9mm • Weight: 75g (BB Mount), 88g (clamp mount), 80g (Mini)