ECIOSL Full Carbon Fiber Bike Stem, 31.8mm Handlebar 28.6mm Steerer Tube, Ultralight Road MTB Bicycle Stem 70/80/90/100/110/120mm with Free Spacers (70mm stem)

[Premium 3K Full Carbon Fiber Construction & Ultra-Light Weight] Made of high-grade 3K full carbon fiber, approx 120mm stem only 144g for standard size, drastically cut down front end weight for faster climbing and improved bike maneuverability, matte carbon finish wear-resistant and stylish. [Standard Universal Size Specification] Fits 28.6mm (1-1/8") fork steerer tube and 31.8mm diameter handlebars; available in multiple lengths:70/80/90/100/110/120mm to adjust riding reach for road bike, mountain bike and gravel bike. [Reinforced Aluminum Alloy Clamp Cover] Equipped with durable aluminum alloy locking cover on handlebar clamp position, enhance clamping strength to avoid slipping, protect carbon handlebar from crushing damage during installation. [Free Bonus Carbon Spacers Included] Package comes with free carbon headset spacers as gift, convenient for fine-tuning your handlebar height without extra purchase, one-stop upgrade for your bike front group. [Secure Stable Locking Structure] 4-bolt locking design (2 top + 2 front), evenly distribute clamping force, effectively avoid loosening during rough off-road or high-speed road riding, ensure long-term stable riding performance.