SRAM S350 1 1 x 11 Gravel Chainset - 42tSRAM S350 1 1 x 11 Gravel Chainset 42T Select Crank Arm Length The value of simplicity The SRAM S350 1 crankset brings quiet simplicity because of SRAMs 1x technology. Featuring SRAM's X Sync tooth profile, the S350 1 crankset is engineered for complete chain control at a great value. Each tooth's thickness is CNC machined to work seamlessly with the chain's inner and outer links. Compatible with 130mm, 135mm and 142mm OLD frames Arm Material: Alloy