Shimano Claris FC-2450 8 Speed Compact Chainset - 50/34T - 170mm Arm - SilverShimano Claris FC 2450 8 Speed Compact Chainset 50 34T 170mm Arm Silver Great value chainset from the Claris 2400 range SG X chainrings feature strategically placed chain pick up pins and tooth profiles to ensure fast and positive shifting Octalink spindle fit bottom bracket for increased rigidity Compatible with 8 speed Hyperglide (HG) chains Lightweight aluminium crank arms Hard wearing steel chainrings 110 mm bolt circle diameter. Spindle interface