Bike transmission clamp ring is a must-have accessory for bike, which can ensure your safety when meet some urgent occasions. This lightweight universal bike transmission clamp ring will fit most bike and make you easy to operate quickly. Essential spare part of bike repair and maintenance. Features - Material: Aluminum Alloy - Size: About 4.50X3.20X1.20cm/1.77X1.26X0.47inch - Note: It is compatible X7 X9 X0 XO1 1. - With a durable and excellent using experience. Simple installation and disassembly. - Nice appearance, suitable for most road bike handlebars and racing bike handlebars. - This pair of high hardness aluminum alloy bike brake levers transmission is durable and cool for your bikes. - This component of bike is high-quality, durable, and long-lasting. - Suitable for daily use and racing use. The smooth surface won't hurt your hands. Package list: 1 x Clamp Ring