in working order , The Shimano Ultegra Di2 ST-R8050 RIGHT/REAR 11 Speed Electronic Shifter is a high-quality bike component designed for road bikes. Made of durable carbon fiber material and manufactured in Japan, this shifter is compatible with Shimano brand bikes and features a sleek black color. With its drop bar style and 11-speed compatibility, this electronic shifter offers smooth and precise gear changes, making it a popular choice for serious cyclists looking to enhance their performance on the road.