Features: Long Service Life: The bicycle fork extension is made of aluminum alloy with a sturdy and durable structure, and features a polished anodized finish. Widely Used: The bicycle fork stem increases handlebar height by extending the bike stem, suitable for mountain bikes, road bikes, and standard bicycles. Lightweight Design: The bicycle fork extension is lightweight and portable, helping reduce cycling fatigue. It is easy to install and allows conversion from threaded to unthreaded steerer tube setups. Working Principle: After inserting the inner tube, the locking screw and slotted nut create an offset due to the angled bore, causing expansion and securely tightening against the inner fork wall. Practical: The bicycle fork adapter is wear-resistant, durable, and easy to install, helping enhance bike performance and improve riding comfort. Specifications: Material: Aluminum alloy Color: Solid color Length: 160mm Notes: 1. Due to lighting and screen setting differences, the item's color may vary slightly from the images. 2. Please allow slight dimensional variations due to manual measurement. Includes: 1 x Stem Riser Adapter