Excellent 100% functional condition with new left side crank and box. Just updated to latest software. Normal cosmetic marks from use on drive side and rings- Left (non-drive) is brand new, never fitted w/box *Compact BCD 110 *Rings - 50t/34t *Crank arm length 172.5mm *New 2032 battery just fitted Stages Shimano Ultegra R8000 Right Side Power Meter Crankset - 172.5mm crank arms. Includes chainrings and chainring bolts. This power meter combines Shimano’s award-winning Ultegra R8000 groupset with Stages Cycling’s proven performance and dependability. The result is an accurate, lightweight, durable power that comes ready to ride on a Shimano R8000 right crank arm. The Stages power meter runs off of a CR2032 battery and features 200 hours of battery life. In addition, the power meter is extremely lightweight – adding only 20 grams to the weight of the crank arm. All Stages power meters are compatible with both ANT+ and Bluetooth SMART devices. This means you can use your favorite bicycle computer as well as a smartphone or tablet.