One set of used SRM Amateur cranks, Size 172.5, Shimano spline bottom bracket mount. It comes with 2 wire harnesses, 1 for a front wheel mount and 1 for a rear wheel mount. The charger and serial computer cable (not pictured, but included) function perfectly. The crankbolts are FSA self-extracting which make it very convenient to move the cranks between two bikes. The power control is the reliable PCIV and has never malfunctioned. The cranks were sent in for a new battery and calibration in May 2004. All hardware is intact and functions perfectly. The chainrings are Shimano 53/39 and are still in good condition.