The Shimano Ultegra ST-R8150 12 Speed Rim brake Di2 Shifters are high-quality cycling components designed for road bikes. Made from durable aluminium material in sleek black colour, these shifters come in a set that includes both the left and right sides. The set is specifically compatible with the Shimano Ultegra model and features a drop bar shifter style for precise and smooth gear changes. Weighing between 100-199g, these shifters offer a lightweight and reliable option for enhancing your cycling experience.