✔【Shoulder Comfort】The 4-link structure of this product allows the handlebars to remain in a stable position during cycling, minimizing the impact on your shoulders and ensuring better control and steering. ✔【Shock Absorption】With excellent cushioning and shock absorption capabilities, this product reduces high-frequency vibrations caused by uneven terrain, providing a smoother and more comfortable ride. ✔【Comfort in Motion】The product comes with 4 different types of springs, offering adjustable softness and hardness to suit individual preferences. Each spring is color-coded for easy identification. It provides up and down shock absorption, ensuring safety during sudden braking without compromising riding posture. ✔【90mm Stem Length】The stem comes in a 90mm length with a 7-degree angle, offering versatility for different riders. To determine your ideal stem length, measure your current stem from the middle of the handlebars to the middle of the top tube. ✔【Warm Notice】We value our customers and are committed to providing the best service. If you have any questions or concerns about our product, we will be happy to assist you and find the best solution.