●Compatible with Wahoo Roam, Wahoo Elemnt & Elemnt Bolt, Elemnt mini, ●Material: high-strength aluminum alloy and plastic, CNC injection molding, anodized surface, lightweight and durable. ●Easy to install and use: install on the top of the steerer shaft. Suitable for 28.6 mm 1 1/8 inch bicycle stems. ●Lightweight: the top cap mount of the bike stem weighs only 20 grams. It is small and easy to carry. ●Recommended use: cross country, enduro, road bike etc. Specially designed for GPS bike computer.