Dimension Cyclocross Arm SetsGood old fashioned style CX arms - without chainrings.Intended Use: CyclocrossArm Length: 170 or 175mmBolt Pattern: 5-BoltChainring BCD: 74 mm/110 mmColour: BlackSpindle Length: 113 mm/118 mmSpindle Interface Type: Square Taper JISWeight: 500g.