Matched set of Shimano 105 model FC-1050 road or touring bike 170 cranks. Size is 170mm. 130 BCD. Round Specialized 53/38 chainrings. 9/16 X 20F pedal threads. Tapers and threading in great shape. Some normal light wear, work great. I took a close up picture of the chainring teeth. Please check out the attached pictures, that's exactly what's included. Buyer pays shipping at $11.00 in the continental U.S. Buyer to pay within 7 days. International shipping by eBay International Shipping Program. High bidder must make contact within 3 days of end of auction. Thanks!