Standard square taper.Size is 175. 46/36/24 round chainrings. 9/16 X 20T pedal threads (English). Tapers and threading in great shape. Includes the Shimano BB-UN71 bottom bracket, english threading.
Thank you for your interest in this quality crank set with a history of moderate use. The chain rings show normal wear. The original matching 73 mm bottom bracket is in fair condition. The spindle interface and pedal threads are in good shape.
+ bottom bracket Shimano BB-ES25. crank arms: 175 mm. bottom bracket sill good rolling. Gold Editionmodel:FC-M570. weight of set: 950 grams. BC 1,37 x 24 T / 68 mm.